nixos/hadoop: Add HA capabilities
- Add HDFS journalnode and ZKFC services - Test failover of HDFS and YARN master services in full hadoop test - Check if a minimal HDFS cluster works in the minimal HDFS test
This commit is contained in:
illustris
parent
455e7f19d0
commit
39c007ce9c
5 changed files with 286 additions and 65 deletions
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@ -24,6 +24,15 @@ in
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Whether to run the HDFS NameNode
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'';
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};
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formatOnInit = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Format HDFS namenode on first start. This is useful for quickly spinning up ephemeral HDFS clusters with a single namenode.
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For HA clusters, initialization involves multiple steps across multiple nodes. Follow [this guide](https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html)
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to initialize an HA cluster manually.
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'';
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};
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inherit restartIfChanged;
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openFirewall = mkOption {
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type = types.bool;
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@ -50,6 +59,33 @@ in
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'';
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};
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};
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journalnode = {
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enabled = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to run the HDFS JournalNode
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'';
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};
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inherit restartIfChanged;
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openFirewall = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Open firewall ports for journalnode
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'';
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};
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};
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zkfc = {
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enabled = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to run the HDFS ZooKeeper failover controller
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'';
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};
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inherit restartIfChanged;
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};
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};
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config = mkMerge [
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@ -59,9 +95,9 @@ in
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wantedBy = [ "multi-user.target" ];
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inherit (cfg.hdfs.namenode) restartIfChanged;
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preStart = ''
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preStart = (mkIf cfg.hdfs.namenode.formatOnInit ''
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${cfg.package}/bin/hdfs --config ${hadoopConf} namenode -format -nonInteractive || true
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'';
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'');
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serviceConfig = {
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User = "hdfs";
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@ -74,6 +110,7 @@ in
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networking.firewall.allowedTCPPorts = (mkIf cfg.hdfs.namenode.openFirewall [
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9870 # namenode.http-address
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8020 # namenode.rpc-address
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8022 # namenode. servicerpc-address
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]);
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})
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(mkIf cfg.hdfs.datanode.enabled {
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@ -96,8 +133,41 @@ in
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9867 # datanode.ipc.address
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]);
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})
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(mkIf cfg.hdfs.journalnode.enabled {
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systemd.services.hdfs-journalnode = {
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description = "Hadoop HDFS JournalNode";
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wantedBy = [ "multi-user.target" ];
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inherit (cfg.hdfs.journalnode) restartIfChanged;
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serviceConfig = {
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User = "hdfs";
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SyslogIdentifier = "hdfs-journalnode";
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ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} journalnode";
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Restart = "always";
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};
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};
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networking.firewall.allowedTCPPorts = (mkIf cfg.hdfs.datanode.openFirewall [
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8480 # dfs.journalnode.http-address
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8485 # dfs.journalnode.rpc-address
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]);
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})
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(mkIf cfg.hdfs.zkfc.enabled {
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systemd.services.hdfs-zkfc = {
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description = "Hadoop HDFS ZooKeeper failover controller";
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wantedBy = [ "multi-user.target" ];
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inherit (cfg.hdfs.zkfc) restartIfChanged;
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serviceConfig = {
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User = "hdfs";
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SyslogIdentifier = "hdfs-zkfc";
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ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} zkfc";
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Restart = "always";
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};
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};
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})
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(mkIf (
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cfg.hdfs.namenode.enabled || cfg.hdfs.datanode.enabled
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cfg.hdfs.namenode.enabled || cfg.hdfs.datanode.enabled || cfg.hdfs.journalnode.enabled || cfg.hdfs.zkfc.enabled
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) {
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users.users.hdfs = {
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description = "Hadoop HDFS user";
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@ -91,6 +91,7 @@ in
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8030 # resourcemanager.scheduler.address
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8031 # resourcemanager.resource-tracker.address
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8032 # resourcemanager.address
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8033 # resourcemanager.admin.address
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]);
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})
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@ -1,70 +1,230 @@
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# This test is very comprehensive. It tests whether all hadoop services work well with each other.
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# Run this when updating the Hadoop package or making significant changes to the hadoop module.
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# For a more basic test, see hdfs.nix and yarn.nix
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import ../make-test-python.nix ({pkgs, ...}: {
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nodes = let
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package = pkgs.hadoop;
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coreSite = {
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"fs.defaultFS" = "hdfs://master";
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"fs.defaultFS" = "hdfs://ns1";
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};
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hdfsSite = {
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"dfs.namenode.rpc-bind-host" = "0.0.0.0";
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"dfs.namenode.http-bind-host" = "0.0.0.0";
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"dfs.namenode.servicerpc-bind-host" = "0.0.0.0";
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# HA Quorum Journal Manager configuration
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"dfs.nameservices" = "ns1";
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"dfs.ha.namenodes.ns1" = "nn1,nn2";
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"dfs.namenode.shared.edits.dir.ns1.nn1" = "qjournal://jn1:8485;jn2:8485;jn3:8485/ns1";
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"dfs.namenode.shared.edits.dir.ns1.nn2" = "qjournal://jn1:8485;jn2:8485;jn3:8485/ns1";
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"dfs.namenode.rpc-address.ns1.nn1" = "nn1:8020";
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"dfs.namenode.rpc-address.ns1.nn2" = "nn2:8020";
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"dfs.namenode.servicerpc-address.ns1.nn1" = "nn1:8022";
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"dfs.namenode.servicerpc-address.ns1.nn2" = "nn2:8022";
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"dfs.namenode.http-address.ns1.nn1" = "nn1:9870";
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"dfs.namenode.http-address.ns1.nn2" = "nn2:9870";
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# Automatic failover configuration
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"dfs.client.failover.proxy.provider.ns1" = "org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider";
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"dfs.ha.automatic-failover.enabled.ns1" = "true";
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"dfs.ha.fencing.methods" = "shell(true)";
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"ha.zookeeper.quorum" = "zk1:2181";
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};
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yarnSiteHA = {
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"yarn.resourcemanager.zk-address" = "zk1:2181";
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"yarn.resourcemanager.ha.enabled" = "true";
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"yarn.resourcemanager.ha.rm-ids" = "rm1,rm2";
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"yarn.resourcemanager.hostname.rm1" = "rm1";
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"yarn.resourcemanager.hostname.rm2" = "rm2";
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"yarn.resourcemanager.ha.automatic-failover.enabled" = "true";
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"yarn.resourcemanager.cluster-id" = "cluster1";
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# yarn.resourcemanager.webapp.address needs to be defined even though yarn.resourcemanager.hostname is set. This shouldn't be necessary, but there's a bug in
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# hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-web-proxy/src/main/java/org/apache/hadoop/yarn/server/webproxy/amfilter/AmFilterInitializer.java:70
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# that causes AM containers to fail otherwise.
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"yarn.resourcemanager.webapp.address.rm1" = "rm1:8088";
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"yarn.resourcemanager.webapp.address.rm2" = "rm2:8088";
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};
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in {
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master = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite;
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hdfs.namenode.enabled = true;
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yarn.resourcemanager.enabled = true;
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};
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virtualisation.memorySize = 1024;
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zk1 = { ... }: {
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services.zookeeper.enable = true;
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networking.firewall.allowedTCPPorts = [ 2181 ];
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};
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worker = {pkgs, options, ...}: {
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# HDFS cluster
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nn1 = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite;
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hdfs.datanode.enabled = true;
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yarn.nodemanager.enabled = true;
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yarnSite = options.services.hadoop.yarnSite.default // {
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"yarn.resourcemanager.hostname" = "master";
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};
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inherit package coreSite hdfsSite;
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hdfs.namenode.enabled = true;
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hdfs.zkfc.enabled = true;
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};
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};
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nn2 = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite hdfsSite;
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hdfs.namenode.enabled = true;
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hdfs.zkfc.enabled = true;
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};
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};
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jn1 = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite hdfsSite;
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hdfs.journalnode.enabled = true;
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};
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};
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jn2 = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite hdfsSite;
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hdfs.journalnode.enabled = true;
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};
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};
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jn3 = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite hdfsSite;
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hdfs.journalnode.enabled = true;
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};
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};
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dn1 = {pkgs, options, ...}: {
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services.hadoop = {
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inherit package coreSite hdfsSite;
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hdfs.datanode.enabled = true;
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};
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};
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# YARN cluster
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rm1 = {pkgs, options, ...}: {
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virtualisation.memorySize = 1024;
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services.hadoop = {
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inherit package coreSite hdfsSite;
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yarnSite = options.services.hadoop.yarnSite.default // yarnSiteHA;
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yarn.resourcemanager.enabled = true;
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};
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};
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rm2 = {pkgs, options, ...}: {
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virtualisation.memorySize = 1024;
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services.hadoop = {
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inherit package coreSite hdfsSite;
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yarnSite = options.services.hadoop.yarnSite.default // yarnSiteHA;
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yarn.resourcemanager.enabled = true;
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};
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};
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nm1 = {pkgs, options, ...}: {
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virtualisation.memorySize = 2048;
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services.hadoop = {
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inherit package coreSite hdfsSite;
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yarnSite = options.services.hadoop.yarnSite.default // yarnSiteHA;
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yarn.nodemanager.enabled = true;
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};
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};
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};
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testScript = ''
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start_all()
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master.wait_for_unit("network.target")
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master.wait_for_unit("hdfs-namenode")
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#### HDFS tests ####
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master.wait_for_open_port(8020)
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master.wait_for_open_port(9870)
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zk1.wait_for_unit("network.target")
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jn1.wait_for_unit("network.target")
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jn2.wait_for_unit("network.target")
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jn3.wait_for_unit("network.target")
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nn1.wait_for_unit("network.target")
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nn2.wait_for_unit("network.target")
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dn1.wait_for_unit("network.target")
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worker.wait_for_unit("network.target")
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worker.wait_for_unit("hdfs-datanode")
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worker.wait_for_open_port(9864)
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worker.wait_for_open_port(9866)
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worker.wait_for_open_port(9867)
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zk1.wait_for_unit("zookeeper")
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jn1.wait_for_unit("hdfs-journalnode")
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jn2.wait_for_unit("hdfs-journalnode")
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jn3.wait_for_unit("hdfs-journalnode")
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master.succeed("curl -f http://worker:9864")
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worker.succeed("curl -f http://master:9870")
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zk1.wait_for_open_port(2181)
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jn1.wait_for_open_port(8480)
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jn1.wait_for_open_port(8485)
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jn2.wait_for_open_port(8480)
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jn2.wait_for_open_port(8485)
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worker.succeed("sudo -u hdfs hdfs dfsadmin -safemode wait")
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# Namenodes must be stopped before initializing the cluster
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nn1.succeed("systemctl stop hdfs-namenode")
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nn2.succeed("systemctl stop hdfs-namenode")
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nn1.succeed("systemctl stop hdfs-zkfc")
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nn2.succeed("systemctl stop hdfs-zkfc")
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master.wait_for_unit("yarn-resourcemanager")
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# Initialize zookeeper for failover controller
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nn1.succeed("sudo -u hdfs hdfs zkfc -formatZK 2>&1 | systemd-cat")
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master.wait_for_open_port(8030)
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master.wait_for_open_port(8031)
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master.wait_for_open_port(8032)
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master.wait_for_open_port(8088)
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worker.succeed("curl -f http://master:8088")
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# Format NN1 and start it
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nn1.succeed("sudo -u hdfs hadoop namenode -format 2>&1 | systemd-cat")
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nn1.succeed("systemctl start hdfs-namenode")
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nn1.wait_for_open_port(9870)
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nn1.wait_for_open_port(8022)
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nn1.wait_for_open_port(8020)
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worker.wait_for_unit("yarn-nodemanager")
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worker.wait_for_open_port(8042)
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worker.wait_for_open_port(8040)
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master.succeed("curl -f http://worker:8042")
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# Bootstrap NN2 from NN1 and start it
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nn2.succeed("sudo -u hdfs hdfs namenode -bootstrapStandby 2>&1 | systemd-cat")
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nn2.succeed("systemctl start hdfs-namenode")
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nn2.wait_for_open_port(9870)
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nn2.wait_for_open_port(8022)
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nn2.wait_for_open_port(8020)
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nn1.succeed("netstat -tulpne | systemd-cat")
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assert "Total Nodes:1" in worker.succeed("yarn node -list")
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# Start failover controllers
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nn1.succeed("systemctl start hdfs-zkfc")
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nn2.succeed("systemctl start hdfs-zkfc")
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assert "Estimated value of Pi is" in worker.succeed("HADOOP_USER_NAME=hdfs yarn jar $(readlink $(which yarn) | sed -r 's~bin/yarn~lib/hadoop-*/share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar~g') pi 2 10")
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assert "SUCCEEDED" in worker.succeed("yarn application -list -appStates FINISHED")
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worker.succeed("sudo -u hdfs hdfs dfs -ls / | systemd-cat")
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# DN should have started by now, but confirm anyway
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dn1.wait_for_unit("hdfs-datanode")
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# Print states of namenodes
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dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
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# Wait for cluster to exit safemode
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dn1.succeed("sudo -u hdfs hdfs dfsadmin -safemode wait")
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dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
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# test R/W
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dn1.succeed("echo testfilecontents | sudo -u hdfs hdfs dfs -put - /testfile")
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assert "testfilecontents" in dn1.succeed("sudo -u hdfs hdfs dfs -cat /testfile")
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# Test NN failover
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nn1.succeed("systemctl stop hdfs-namenode")
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assert "active" in dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState")
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dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
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assert "testfilecontents" in dn1.succeed("sudo -u hdfs hdfs dfs -cat /testfile")
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nn1.succeed("systemctl start hdfs-namenode")
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nn1.wait_for_open_port(9870)
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nn1.wait_for_open_port(8022)
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nn1.wait_for_open_port(8020)
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assert "standby" in dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState")
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dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
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#### YARN tests ####
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rm1.wait_for_unit("network.target")
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rm2.wait_for_unit("network.target")
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nm1.wait_for_unit("network.target")
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rm1.wait_for_unit("yarn-resourcemanager")
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rm1.wait_for_open_port(8088)
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rm2.wait_for_unit("yarn-resourcemanager")
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rm2.wait_for_open_port(8088)
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nm1.wait_for_unit("yarn-nodemanager")
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nm1.wait_for_open_port(8042)
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nm1.wait_for_open_port(8040)
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nm1.wait_until_succeeds("yarn node -list | grep Nodes:1")
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nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState | systemd-cat")
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nm1.succeed("sudo -u yarn yarn node -list | systemd-cat")
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# Test RM failover
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rm1.succeed("systemctl stop yarn-resourcemanager")
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assert "standby" not in nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState")
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nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState | systemd-cat")
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rm1.succeed("systemctl start yarn-resourcemanager")
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rm1.wait_for_unit("yarn-resourcemanager")
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rm1.wait_for_open_port(8088)
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assert "standby" in nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState")
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nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState | systemd-cat")
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assert "Estimated value of Pi is" in nm1.succeed("HADOOP_USER_NAME=hdfs yarn jar $(readlink $(which yarn) | sed -r 's~bin/yarn~lib/hadoop-*/share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar~g') pi 2 10")
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assert "SUCCEEDED" in nm1.succeed("yarn application -list -appStates FINISHED")
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'';
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})
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})
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@ -1,9 +1,13 @@
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# Test a minimal HDFS cluster with no HA
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import ../make-test-python.nix ({...}: {
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nodes = {
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namenode = {pkgs, ...}: {
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services.hadoop = {
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package = pkgs.hadoop;
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hdfs.namenode.enabled = true;
|
||||
hdfs.namenode = {
|
||||
enabled = true;
|
||||
formatOnInit = true;
|
||||
};
|
||||
coreSite = {
|
||||
"fs.defaultFS" = "hdfs://namenode:8020";
|
||||
};
|
||||
|
|
@ -13,10 +17,6 @@ import ../make-test-python.nix ({...}: {
|
|||
"dfs.namenode.http-bind-host" = "0.0.0.0";
|
||||
};
|
||||
};
|
||||
networking.firewall.allowedTCPPorts = [
|
||||
9870 # namenode.http-address
|
||||
8020 # namenode.rpc-address
|
||||
];
|
||||
};
|
||||
datanode = {pkgs, ...}: {
|
||||
services.hadoop = {
|
||||
|
|
@ -26,11 +26,6 @@ import ../make-test-python.nix ({...}: {
|
|||
"fs.defaultFS" = "hdfs://namenode:8020";
|
||||
};
|
||||
};
|
||||
networking.firewall.allowedTCPPorts = [
|
||||
9864 # datanode.http.address
|
||||
9866 # datanode.address
|
||||
9867 # datanode.ipc.address
|
||||
];
|
||||
};
|
||||
};
|
||||
|
||||
|
|
@ -50,5 +45,9 @@ import ../make-test-python.nix ({...}: {
|
|||
|
||||
namenode.succeed("curl -f http://namenode:9870")
|
||||
datanode.succeed("curl -f http://datanode:9864")
|
||||
|
||||
datanode.succeed("sudo -u hdfs hdfs dfsadmin -safemode wait")
|
||||
datanode.succeed("echo testfilecontents | sudo -u hdfs hdfs dfs -put - /testfile")
|
||||
assert "testfilecontents" in datanode.succeed("sudo -u hdfs hdfs dfs -cat /testfile")
|
||||
'';
|
||||
})
|
||||
|
|
|
|||
|
|
@ -1,3 +1,4 @@
|
|||
# This only tests if YARN is able to start its services
|
||||
import ../make-test-python.nix ({...}: {
|
||||
nodes = {
|
||||
resourcemanager = {pkgs, ...}: {
|
||||
|
|
@ -6,10 +7,6 @@ import ../make-test-python.nix ({...}: {
|
|||
services.hadoop.yarnSite = {
|
||||
"yarn.resourcemanager.scheduler.class" = "org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler";
|
||||
};
|
||||
networking.firewall.allowedTCPPorts = [
|
||||
8088 # resourcemanager.webapp.address
|
||||
8031 # resourcemanager.resource-tracker.address
|
||||
];
|
||||
};
|
||||
nodemanager = {pkgs, ...}: {
|
||||
services.hadoop.package = pkgs.hadoop;
|
||||
|
|
@ -17,12 +14,7 @@ import ../make-test-python.nix ({...}: {
|
|||
services.hadoop.yarnSite = {
|
||||
"yarn.resourcemanager.hostname" = "resourcemanager";
|
||||
"yarn.nodemanager.log-dirs" = "/tmp/userlogs";
|
||||
"yarn.nodemanager.address" = "0.0.0.0:8041";
|
||||
};
|
||||
networking.firewall.allowedTCPPorts = [
|
||||
8042 # nodemanager.webapp.address
|
||||
8041 # nodemanager.address
|
||||
];
|
||||
};
|
||||
|
||||
};
|
||||
|
|
@ -38,7 +30,6 @@ import ../make-test-python.nix ({...}: {
|
|||
nodemanager.wait_for_unit("yarn-nodemanager")
|
||||
nodemanager.wait_for_unit("network.target")
|
||||
nodemanager.wait_for_open_port(8042)
|
||||
nodemanager.wait_for_open_port(8041)
|
||||
|
||||
resourcemanager.succeed("curl -f http://localhost:8088")
|
||||
nodemanager.succeed("curl -f http://localhost:8042")
|
||||
|
|
|
|||
Loading…
Reference in a new issue