I'm trying to build a Namenode HA cluster on OpenStack. I have two mount points for my instance when it's created: / for all the os related bits and /hadoopfs/fs1 for all the HDFS/YARN data. I think the /hadoopfs/fs{1..n} is standard. When I deploy my cluster and completes I end up with dfs.datanodes.data.dir:/hadoopfs/fs1/hdfs/data set, but then all the config groups that get generated during the build process have null values set. So this is causing the datanode process to create its data dir in /tmp/hadoop-hdfs/dfs/data/ which is on the root filesystem instead of the 20TB data store for the instance. What am I missing that could be causing this to happen? From Ambari: From the command line: Finally here's a copy of my blueprint: {
"Blueprints": {
"blueprint_name": "ha-hdfs",
"stack_name": "HDP",
"stack_version": "2.5"
},
"host_groups": [
{
"name": "gateway",
"cardinality" : "1",
"components": [
{ "name": "HDFS_CLIENT" },
{ "name": "MAPREDUCE2_CLIENT" },
{ "name": "METRICS_COLLECTOR" },
{ "name": "METRICS_MONITOR" },
{ "name": "TEZ_CLIENT" },
{ "name": "YARN_CLIENT" },
{ "name": "ZOOKEEPER_CLIENT" }
]
},
{
"name": "master_1",
"cardinality" : "1",
"components": [
{ "name": "HISTORYSERVER" },
{ "name": "JOURNALNODE" },
{ "name": "METRICS_MONITOR" },
{ "name": "NAMENODE" },
{ "name": "ZKFC" },
{ "name": "ZOOKEEPER_SERVER" }
]
},
{
"name": "master_2",
"cardinality" : "1",
"components": [
{ "name": "APP_TIMELINE_SERVER" },
{ "name": "JOURNALNODE" },
{ "name": "METRICS_MONITOR" },
{ "name": "RESOURCEMANAGER" },
{ "name": "ZOOKEEPER_SERVER" }
]
},
{
"name": "master_3",
"cardinality" : "1",
"components": [
{ "name": "JOURNALNODE" },
{ "name": "METRICS_MONITOR" },
{ "name": "NAMENODE" },
{ "name": "ZKFC" },
{ "name": "ZOOKEEPER_SERVER" }
]
},
{
"name": "slave_1",
"components": [
{ "name": "DATANODE" },
{ "name": "METRICS_MONITOR" },
{ "name": "NODEMANAGER" }
]
}
],
"configurations": [
{
"core-site": {
"properties" : {
"fs.defaultFS" : "hdfs://myclusterhaha",
"ha.zookeeper.quorum" : "%HOSTGROUP::master_1%:2181,%HOSTGROUP::master_2%:2181,%HOSTGROUP::master_3%:2181"
}}
},
{
"hdfs-site": {
"properties" : {
"dfs.client.failover.proxy.provider.myclusterhaha" : "org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider",
"dfs.ha.automatic-failover.enabled" : "true",
"dfs.ha.fencing.methods" : "shell(/bin/true)",
"dfs.ha.namenodes.myclusterhaha" : "nn1,nn2",
"dfs.namenode.http-address" : "%HOSTGROUP::master_1%:50070",
"dfs.namenode.http-address.myclusterhaha.nn1" : "%HOSTGROUP::master_1%:50070",
"dfs.namenode.http-address.myclusterhaha.nn2" : "%HOSTGROUP::master_3%:50070",
"dfs.namenode.https-address" : "%HOSTGROUP::master_1%:50470",
"dfs.namenode.https-address.myclusterhaha.nn1" : "%HOSTGROUP::master_1%:50470",
"dfs.namenode.https-address.myclusterhaha.nn2" : "%HOSTGROUP::master_3%:50470",
"dfs.namenode.rpc-address.myclusterhaha.nn1" : "%HOSTGROUP::master_1%:8020",
"dfs.namenode.rpc-address.myclusterhaha.nn2" : "%HOSTGROUP::master_3%:8020",
"dfs.namenode.shared.edits.dir" : "qjournal://%HOSTGROUP::master_1%:8485;%HOSTGROUP::master_2%:8485;%HOSTGROUP::master_3%:8485/myclusterhaha",
"dfs.nameservices" : "myclusterhaha",
"dfs.datanode.data.dir" : "/hadoopfs/fs1/hdfs/data"
}
}
},
{
"hadoop-env": {
"properties": {
"hadoop_heapsize": "4096",
"dtnode_heapsize": "8192m",
"namenode_heapsize": "32768m"
}
}
}
]
}
Any advice you can provide would be great. Thanks, Scott
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