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Merge pull request #144239 from illustris/hadoop

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nixos/hadoop: Add HA services and HTTPFS
This commit is contained in:
Bernardo Meurer 2021-11-04 23:30:47 -07:00 committed by GitHub
commit 1403ce522d
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9 changed files with 406 additions and 108 deletions
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23
nixos/doc/manual/from_md/release-notes/rl-2111.section.xml
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@ -50,6 +50,29 @@
guide</link> is available.
</para>
</listitem>
<listitem>
<para>
Improvements have been made to the Hadoop module and package:
</para>
<itemizedlist spacing="compact">
<listitem>
<para>
HDFS and YARN now support production-ready highly
available deployments with automatic failover.
</para>
</listitem>
<listitem>
<para>
Hadoop now defaults to Hadoop 3, updated from 2.
</para>
</listitem>
<listitem>
<para>
JournalNode, ZKFS and HTTPFS services have been added.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
Activation scripts can now opt int to be run when running

5
nixos/doc/manual/release-notes/rl-2111.section.md
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@ -18,6 +18,11 @@ In addition to numerous new and upgraded packages, this release has the followin
- spark now defaults to spark 3, updated from 2. A [migration guide](https://spark.apache.org/docs/latest/core-migration-guide.html#upgrading-from-core-24-to-30) is available.
- Improvements have been made to the Hadoop module and package:
- HDFS and YARN now support production-ready highly available deployments with automatic failover.
- Hadoop now defaults to Hadoop 3, updated from 2.
- JournalNode, ZKFS and HTTPFS services have been added.
- Activation scripts can now opt int to be run when running `nixos-rebuild dry-activate` and detect the dry activation by reading `$NIXOS_ACTION`.
This allows activation scripts to output what they would change if the activation was really run.
The users/modules activation script supports this and outputs some of is actions.

1
nixos/modules/services/cluster/hadoop/conf.nix
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@ -35,6 +35,7 @@ pkgs.runCommand "hadoop-conf" {} ''
cp ${siteXml "hdfs-site.xml" cfg.hdfsSite}/* $out/
cp ${siteXml "mapred-site.xml" cfg.mapredSite}/* $out/
cp ${siteXml "yarn-site.xml" cfg.yarnSite}/* $out/
cp ${siteXml "httpfs-site.xml" cfg.httpfsSite}/* $out/
cp ${cfgFile "container-executor.cfg" cfg.containerExecutorCfg}/* $out/
cp ${pkgs.writeTextDir "hadoop-user-functions.sh" userFunctions}/* $out/
cp ${pkgs.writeTextDir "hadoop-env.sh" hadoopEnv}/* $out/

42
nixos/modules/services/cluster/hadoop/default.nix
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@ -15,7 +15,10 @@ with lib;
"fs.defaultFS" = "hdfs://localhost";
}
'';
description = "Hadoop core-site.xml definition";
description = ''
Hadoop core-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/core-default.xml"/>
'';
};
hdfsSite = mkOption {
@ -28,7 +31,10 @@ with lib;
"dfs.nameservices" = "namenode1";
}
'';
description = "Hadoop hdfs-site.xml definition";
description = ''
Hadoop hdfs-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml"/>
'';
};
mapredSite = mkOption {
@ -44,7 +50,10 @@ with lib;
"mapreduce.map.java.opts" = "-Xmx900m -XX:+UseParallelGC";
}
'';
description = "Hadoop mapred-site.xml definition";
description = ''
Hadoop mapred-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml"/>
'';
};
yarnSite = mkOption {
@ -67,7 +76,24 @@ with lib;
"yarn.resourcemanager.hostname" = "''${config.networking.hostName}";
}
'';
description = "Hadoop yarn-site.xml definition";
description = ''
Hadoop yarn-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-common/yarn-default.xml"/>
'';
};
httpfsSite = mkOption {
default = { };
type = types.attrsOf types.anything;
example = literalExpression ''
{
"hadoop.http.max.threads" = 500;
}
'';
description = ''
Hadoop httpfs-site.xml definition
<link xlink:href="https://hadoop.apache.org/docs/current/hadoop-hdfs-httpfs/httpfs-default.html"/>
'';
};
log4jProperties = mkOption {
@ -92,7 +118,10 @@ with lib;
"feature.terminal.enabled" = 0;
}
'';
description = "Yarn container-executor.cfg definition";
description = ''
Yarn container-executor.cfg definition
<link xlink:href="https://hadoop.apache.org/docs/r2.7.2/hadoop-yarn/hadoop-yarn-site/SecureContainer.html"/>
'';
};
extraConfDirs = mkOption {
@ -118,7 +147,8 @@ with lib;
config = mkMerge [
(mkIf (builtins.hasAttr "yarn" config.users.users ||
builtins.hasAttr "hdfs" config.users.users) {
builtins.hasAttr "hdfs" config.users.users ||
builtins.hasAttr "httpfs" config.users.users) {
users.groups.hadoop = {
gid = config.ids.gids.hadoop;
};

123
nixos/modules/services/cluster/hadoop/hdfs.nix
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@ -17,11 +17,14 @@ in
{
options.services.hadoop.hdfs = {
namenode = {
enabled = mkOption {
enable = mkEnableOption "Whether to run the HDFS NameNode";
formatOnInit = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run the HDFS NameNode
Format HDFS namenode on first start. This is useful for quickly spinning up ephemeral HDFS clusters with a single namenode.
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)
to initialize an HA cluster manually.
'';
};
inherit restartIfChanged;
@ -34,13 +37,7 @@ in
};
};
datanode = {
enabled = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run the HDFS DataNode
'';
};
enable = mkEnableOption "Whether to run the HDFS DataNode";
inherit restartIfChanged;
openFirewall = mkOption {
type = types.bool;
@ -50,18 +47,51 @@ in
'';
};
};
journalnode = {
enable = mkEnableOption "Whether to run the HDFS JournalNode";
inherit restartIfChanged;
openFirewall = mkOption {
type = types.bool;
default = true;
description = ''
Open firewall ports for journalnode
'';
};
};
zkfc = {
enable = mkEnableOption "Whether to run the HDFS ZooKeeper failover controller";
inherit restartIfChanged;
};
httpfs = {
enable = mkEnableOption "Whether to run the HDFS HTTPfs server";
tempPath = mkOption {
type = types.path;
default = "/tmp/hadoop/httpfs";
description = ''
HTTPFS_TEMP path used by HTTPFS
'';
};
inherit restartIfChanged;
openFirewall = mkOption {
type = types.bool;
default = true;
description = ''
Open firewall ports for HTTPFS
'';
};
};
};
config = mkMerge [
(mkIf cfg.hdfs.namenode.enabled {
(mkIf cfg.hdfs.namenode.enable {
systemd.services.hdfs-namenode = {
description = "Hadoop HDFS NameNode";
wantedBy = [ "multi-user.target" ];
inherit (cfg.hdfs.namenode) restartIfChanged;
preStart = ''
preStart = (mkIf cfg.hdfs.namenode.formatOnInit ''
${cfg.package}/bin/hdfs --config ${hadoopConf} namenode -format -nonInteractive || true
'';
'');
serviceConfig = {
User = "hdfs";
@ -74,9 +104,10 @@ in
networking.firewall.allowedTCPPorts = (mkIf cfg.hdfs.namenode.openFirewall [
9870 # namenode.http-address
8020 # namenode.rpc-address
8022 # namenode. servicerpc-address
]);
})
(mkIf cfg.hdfs.datanode.enabled {
(mkIf cfg.hdfs.datanode.enable {
systemd.services.hdfs-datanode = {
description = "Hadoop HDFS DataNode";
wantedBy = [ "multi-user.target" ];
@ -96,8 +127,64 @@ in
9867 # datanode.ipc.address
]);
})
(mkIf cfg.hdfs.journalnode.enable {
systemd.services.hdfs-journalnode = {
description = "Hadoop HDFS JournalNode";
wantedBy = [ "multi-user.target" ];
inherit (cfg.hdfs.journalnode) restartIfChanged;
serviceConfig = {
User = "hdfs";
SyslogIdentifier = "hdfs-journalnode";
ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} journalnode";
Restart = "always";
};
};
networking.firewall.allowedTCPPorts = (mkIf cfg.hdfs.journalnode.openFirewall [
8480 # dfs.journalnode.http-address
8485 # dfs.journalnode.rpc-address
]);
})
(mkIf cfg.hdfs.zkfc.enable {
systemd.services.hdfs-zkfc = {
description = "Hadoop HDFS ZooKeeper failover controller";
wantedBy = [ "multi-user.target" ];
inherit (cfg.hdfs.zkfc) restartIfChanged;
serviceConfig = {
User = "hdfs";
SyslogIdentifier = "hdfs-zkfc";
ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} zkfc";
Restart = "always";
};
};
})
(mkIf cfg.hdfs.httpfs.enable {
systemd.services.hdfs-httpfs = {
description = "Hadoop httpfs";
wantedBy = [ "multi-user.target" ];
inherit (cfg.hdfs.httpfs) restartIfChanged;
environment.HTTPFS_TEMP = cfg.hdfs.httpfs.tempPath;
preStart = ''
mkdir -p $HTTPFS_TEMP
'';
serviceConfig = {
User = "httpfs";
SyslogIdentifier = "hdfs-httpfs";
ExecStart = "${cfg.package}/bin/hdfs --config ${hadoopConf} httpfs";
Restart = "always";
};
};
networking.firewall.allowedTCPPorts = (mkIf cfg.hdfs.httpfs.openFirewall [
14000 # httpfs.http.port
]);
})
(mkIf (
cfg.hdfs.namenode.enabled || cfg.hdfs.datanode.enabled
cfg.hdfs.namenode.enable || cfg.hdfs.datanode.enable || cfg.hdfs.journalnode.enable || cfg.hdfs.zkfc.enable
) {
users.users.hdfs = {
description = "Hadoop HDFS user";
@ -105,6 +192,12 @@ in
uid = config.ids.uids.hdfs;
};
})
(mkIf cfg.hdfs.httpfs.enable {
users.users.httpfs = {
description = "Hadoop HTTPFS user";
group = "hadoop";
isSystemUser = true;
};
})
];
}

23
nixos/modules/services/cluster/hadoop/yarn.nix
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@ -17,13 +17,7 @@ in
{
options.services.hadoop.yarn = {
resourcemanager = {
enabled = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run the Hadoop YARN ResourceManager
'';
};
enable = mkEnableOption "Whether to run the Hadoop YARN ResourceManager";
inherit restartIfChanged;
openFirewall = mkOption {
type = types.bool;
@ -34,13 +28,7 @@ in
};
};
nodemanager = {
enabled = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run the Hadoop YARN NodeManager
'';
};
enable = mkEnableOption "Whether to run the Hadoop YARN NodeManager";
inherit restartIfChanged;
addBinBash = mkOption {
type = types.bool;
@ -62,7 +50,7 @@ in
config = mkMerge [
(mkIf (
cfg.yarn.resourcemanager.enabled || cfg.yarn.nodemanager.enabled
cfg.yarn.resourcemanager.enable || cfg.yarn.nodemanager.enable
) {
users.users.yarn = {
@ -72,7 +60,7 @@ in
};
})
(mkIf cfg.yarn.resourcemanager.enabled {
(mkIf cfg.yarn.resourcemanager.enable {
systemd.services.yarn-resourcemanager = {
description = "Hadoop YARN ResourceManager";
wantedBy = [ "multi-user.target" ];
@ -91,10 +79,11 @@ in
8030 # resourcemanager.scheduler.address
8031 # resourcemanager.resource-tracker.address
8032 # resourcemanager.address
8033 # resourcemanager.admin.address
]);
})
(mkIf cfg.yarn.nodemanager.enabled {
(mkIf cfg.yarn.nodemanager.enable {
# Needed because yarn hardcodes /bin/bash in container start scripts
# These scripts can't be patched, they are generated at runtime
systemd.tmpfiles.rules = [

244
nixos/tests/hadoop/hadoop.nix
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@ -1,70 +1,230 @@
# This test is very comprehensive. It tests whether all hadoop services work well with each other.
# Run this when updating the Hadoop package or making significant changes to the hadoop module.
# For a more basic test, see hdfs.nix and yarn.nix
import ../make-test-python.nix ({pkgs, ...}: {
nodes = let
package = pkgs.hadoop;
coreSite = {
"fs.defaultFS" = "hdfs://master";
"fs.defaultFS" = "hdfs://ns1";
};
hdfsSite = {
"dfs.namenode.rpc-bind-host" = "0.0.0.0";
"dfs.namenode.http-bind-host" = "0.0.0.0";
"dfs.namenode.servicerpc-bind-host" = "0.0.0.0";
# HA Quorum Journal Manager configuration
"dfs.nameservices" = "ns1";
"dfs.ha.namenodes.ns1" = "nn1,nn2";
"dfs.namenode.shared.edits.dir.ns1.nn1" = "qjournal://jn1:8485;jn2:8485;jn3:8485/ns1";
"dfs.namenode.shared.edits.dir.ns1.nn2" = "qjournal://jn1:8485;jn2:8485;jn3:8485/ns1";
"dfs.namenode.rpc-address.ns1.nn1" = "nn1:8020";
"dfs.namenode.rpc-address.ns1.nn2" = "nn2:8020";
"dfs.namenode.servicerpc-address.ns1.nn1" = "nn1:8022";
"dfs.namenode.servicerpc-address.ns1.nn2" = "nn2:8022";
"dfs.namenode.http-address.ns1.nn1" = "nn1:9870";
"dfs.namenode.http-address.ns1.nn2" = "nn2:9870";
# Automatic failover configuration
"dfs.client.failover.proxy.provider.ns1" = "org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider";
"dfs.ha.automatic-failover.enabled.ns1" = "true";
"dfs.ha.fencing.methods" = "shell(true)";
"ha.zookeeper.quorum" = "zk1:2181";
};
yarnSiteHA = {
"yarn.resourcemanager.zk-address" = "zk1:2181";
"yarn.resourcemanager.ha.enabled" = "true";
"yarn.resourcemanager.ha.rm-ids" = "rm1,rm2";
"yarn.resourcemanager.hostname.rm1" = "rm1";
"yarn.resourcemanager.hostname.rm2" = "rm2";
"yarn.resourcemanager.ha.automatic-failover.enabled" = "true";
"yarn.resourcemanager.cluster-id" = "cluster1";
# 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
# 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
# that causes AM containers to fail otherwise.
"yarn.resourcemanager.webapp.address.rm1" = "rm1:8088";
"yarn.resourcemanager.webapp.address.rm2" = "rm2:8088";
};
in {
master = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite;
hdfs.namenode.enabled = true;
yarn.resourcemanager.enabled = true;
};
virtualisation.memorySize = 1024;
zk1 = { ... }: {
services.zookeeper.enable = true;
networking.firewall.allowedTCPPorts = [ 2181 ];
};
worker = {pkgs, options, ...}: {
# HDFS cluster
nn1 = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite;
hdfs.datanode.enabled = true;
yarn.nodemanager.enabled = true;
yarnSite = options.services.hadoop.yarnSite.default // {
"yarn.resourcemanager.hostname" = "master";
};
inherit package coreSite hdfsSite;
hdfs.namenode.enable = true;
hdfs.zkfc.enable = true;
};
};
nn2 = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite hdfsSite;
hdfs.namenode.enable = true;
hdfs.zkfc.enable = true;
};
};
jn1 = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite hdfsSite;
hdfs.journalnode.enable = true;
};
};
jn2 = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite hdfsSite;
hdfs.journalnode.enable = true;
};
};
jn3 = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite hdfsSite;
hdfs.journalnode.enable = true;
};
};
dn1 = {pkgs, options, ...}: {
services.hadoop = {
inherit package coreSite hdfsSite;
hdfs.datanode.enable = true;
};
};
# YARN cluster
rm1 = {pkgs, options, ...}: {
virtualisation.memorySize = 1024;
services.hadoop = {
inherit package coreSite hdfsSite;
yarnSite = options.services.hadoop.yarnSite.default // yarnSiteHA;
yarn.resourcemanager.enable = true;
};
};
rm2 = {pkgs, options, ...}: {
virtualisation.memorySize = 1024;
services.hadoop = {
inherit package coreSite hdfsSite;
yarnSite = options.services.hadoop.yarnSite.default // yarnSiteHA;
yarn.resourcemanager.enable = true;
};
};
nm1 = {pkgs, options, ...}: {
virtualisation.memorySize = 2048;
services.hadoop = {
inherit package coreSite hdfsSite;
yarnSite = options.services.hadoop.yarnSite.default // yarnSiteHA;
yarn.nodemanager.enable = true;
};
};
};
testScript = ''
start_all()
master.wait_for_unit("network.target")
master.wait_for_unit("hdfs-namenode")
#### HDFS tests ####
master.wait_for_open_port(8020)
master.wait_for_open_port(9870)
zk1.wait_for_unit("network.target")
jn1.wait_for_unit("network.target")
jn2.wait_for_unit("network.target")
jn3.wait_for_unit("network.target")
nn1.wait_for_unit("network.target")
nn2.wait_for_unit("network.target")
dn1.wait_for_unit("network.target")
worker.wait_for_unit("network.target")
worker.wait_for_unit("hdfs-datanode")
worker.wait_for_open_port(9864)
worker.wait_for_open_port(9866)
worker.wait_for_open_port(9867)
zk1.wait_for_unit("zookeeper")
jn1.wait_for_unit("hdfs-journalnode")
jn2.wait_for_unit("hdfs-journalnode")
jn3.wait_for_unit("hdfs-journalnode")
master.succeed("curl -f http://worker:9864")
worker.succeed("curl -f http://master:9870")
zk1.wait_for_open_port(2181)
jn1.wait_for_open_port(8480)
jn1.wait_for_open_port(8485)
jn2.wait_for_open_port(8480)
jn2.wait_for_open_port(8485)
worker.succeed("sudo -u hdfs hdfs dfsadmin -safemode wait")
# Namenodes must be stopped before initializing the cluster
nn1.succeed("systemctl stop hdfs-namenode")
nn2.succeed("systemctl stop hdfs-namenode")
nn1.succeed("systemctl stop hdfs-zkfc")
nn2.succeed("systemctl stop hdfs-zkfc")
master.wait_for_unit("yarn-resourcemanager")
# Initialize zookeeper for failover controller
nn1.succeed("sudo -u hdfs hdfs zkfc -formatZK 2>&1 | systemd-cat")
master.wait_for_open_port(8030)
master.wait_for_open_port(8031)
master.wait_for_open_port(8032)
master.wait_for_open_port(8088)
worker.succeed("curl -f http://master:8088")
# Format NN1 and start it
nn1.succeed("sudo -u hdfs hadoop namenode -format 2>&1 | systemd-cat")
nn1.succeed("systemctl start hdfs-namenode")
nn1.wait_for_open_port(9870)
nn1.wait_for_open_port(8022)
nn1.wait_for_open_port(8020)
worker.wait_for_unit("yarn-nodemanager")
worker.wait_for_open_port(8042)
worker.wait_for_open_port(8040)
master.succeed("curl -f http://worker:8042")
# Bootstrap NN2 from NN1 and start it
nn2.succeed("sudo -u hdfs hdfs namenode -bootstrapStandby 2>&1 | systemd-cat")
nn2.succeed("systemctl start hdfs-namenode")
nn2.wait_for_open_port(9870)
nn2.wait_for_open_port(8022)
nn2.wait_for_open_port(8020)
nn1.succeed("netstat -tulpne | systemd-cat")
assert "Total Nodes:1" in worker.succeed("yarn node -list")
# Start failover controllers
nn1.succeed("systemctl start hdfs-zkfc")
nn2.succeed("systemctl start hdfs-zkfc")
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")
assert "SUCCEEDED" in worker.succeed("yarn application -list -appStates FINISHED")
worker.succeed("sudo -u hdfs hdfs dfs -ls / | systemd-cat")
# DN should have started by now, but confirm anyway
dn1.wait_for_unit("hdfs-datanode")
# Print states of namenodes
dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
# Wait for cluster to exit safemode
dn1.succeed("sudo -u hdfs hdfs dfsadmin -safemode wait")
dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
# test R/W
dn1.succeed("echo testfilecontents | sudo -u hdfs hdfs dfs -put - /testfile")
assert "testfilecontents" in dn1.succeed("sudo -u hdfs hdfs dfs -cat /testfile")
# Test NN failover
nn1.succeed("systemctl stop hdfs-namenode")
assert "active" in dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState")
dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
assert "testfilecontents" in dn1.succeed("sudo -u hdfs hdfs dfs -cat /testfile")
nn1.succeed("systemctl start hdfs-namenode")
nn1.wait_for_open_port(9870)
nn1.wait_for_open_port(8022)
nn1.wait_for_open_port(8020)
assert "standby" in dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState")
dn1.succeed("sudo -u hdfs hdfs haadmin -getAllServiceState | systemd-cat")
#### YARN tests ####
rm1.wait_for_unit("network.target")
rm2.wait_for_unit("network.target")
nm1.wait_for_unit("network.target")
rm1.wait_for_unit("yarn-resourcemanager")
rm1.wait_for_open_port(8088)
rm2.wait_for_unit("yarn-resourcemanager")
rm2.wait_for_open_port(8088)
nm1.wait_for_unit("yarn-nodemanager")
nm1.wait_for_open_port(8042)
nm1.wait_for_open_port(8040)
nm1.wait_until_succeeds("yarn node -list | grep Nodes:1")
nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState | systemd-cat")
nm1.succeed("sudo -u yarn yarn node -list | systemd-cat")
# Test RM failover
rm1.succeed("systemctl stop yarn-resourcemanager")
assert "standby" not in nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState")
nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState | systemd-cat")
rm1.succeed("systemctl start yarn-resourcemanager")
rm1.wait_for_unit("yarn-resourcemanager")
rm1.wait_for_open_port(8088)
assert "standby" in nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState")
nm1.succeed("sudo -u yarn yarn rmadmin -getAllServiceState | systemd-cat")
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")
assert "SUCCEEDED" in nm1.succeed("yarn application -list -appStates FINISHED")
'';
})
})

38
nixos/tests/hadoop/hdfs.nix
View File

@ -1,36 +1,34 @@
# Test a minimal HDFS cluster with no HA
import ../make-test-python.nix ({...}: {
nodes = {
namenode = {pkgs, ...}: {
virtualisation.memorySize = 1024;
services.hadoop = {
package = pkgs.hadoop;
hdfs.namenode.enabled = true;
hdfs = {
namenode = {
enable = true;
formatOnInit = true;
};
httpfs.enable = true;
};
coreSite = {
"fs.defaultFS" = "hdfs://namenode:8020";
};
hdfsSite = {
"dfs.replication" = 1;
"dfs.namenode.rpc-bind-host" = "0.0.0.0";
"dfs.namenode.http-bind-host" = "0.0.0.0";
"hadoop.proxyuser.httpfs.groups" = "*";
"hadoop.proxyuser.httpfs.hosts" = "*";
};
};
networking.firewall.allowedTCPPorts = [
9870 # namenode.http-address
8020 # namenode.rpc-address
];
};
datanode = {pkgs, ...}: {
services.hadoop = {
package = pkgs.hadoop;
hdfs.datanode.enabled = true;
hdfs.datanode.enable = true;
coreSite = {
"fs.defaultFS" = "hdfs://namenode:8020";
"hadoop.proxyuser.httpfs.groups" = "*";
"hadoop.proxyuser.httpfs.hosts" = "*";
};
};
networking.firewall.allowedTCPPorts = [
9864 # datanode.http.address
9866 # datanode.address
9867 # datanode.ipc.address
];
};
};
@ -50,5 +48,13 @@ 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")
namenode.wait_for_unit("hdfs-httpfs")
namenode.wait_for_open_port(14000)
assert "testfilecontents" in datanode.succeed("curl -f \"http://namenode:14000/webhdfs/v1/testfile?user.name=hdfs&op=OPEN\" 2>&1")
'';
})

15
nixos/tests/hadoop/yarn.nix
View File

@ -1,28 +1,20 @@
# This only tests if YARN is able to start its services
import ../make-test-python.nix ({...}: {
nodes = {
resourcemanager = {pkgs, ...}: {
services.hadoop.package = pkgs.hadoop;
services.hadoop.yarn.resourcemanager.enabled = true;
services.hadoop.yarn.resourcemanager.enable = true;
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;
services.hadoop.yarn.nodemanager.enabled = true;
services.hadoop.yarn.nodemanager.enable = true;
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")