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https://issues.apache.org/jira/browse/AMBARI-19730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15852226#comment-15852226
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Vivek Rathod commented on AMBARI-19730:
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Thanks [~stoader] for the analysis
> Namenodes fail to come up after removing some Journalnodes
> ----------------------------------------------------------
>
> Key: AMBARI-19730
> URL: https://issues.apache.org/jira/browse/AMBARI-19730
> Project: Ambari
> Issue Type: Bug
> Affects Versions: 2.5.0
> Reporter: Vivek Rathod
> Fix For: 2.5.0
>
>
> Namenodes fail to come up after removing some Journalnodes
> STR:
> Deploy a 6 node HA cluster using Blueprints, with 6 Journalnodes.
> Remove 2 Journalnodes using Manage JN Wizard
> In the Start All Services in Manage JN Wizard, Both the Namenodes fail to
> come up.
> {code}
> 17/01/26 03:39:56 INFO ipc.Client: Retrying connect to server:
> <INTERNAL_HOST_NAME>/<EXTERNAL_HOST_NAME>:8020. Already tried 0 time(s);
> retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=1,
> sleepTime=1000 MILLISECONDS)
> 17/01/26 03:39:56 WARN ipc.Client: Failed to connect to server:
> <INTERNAL_HOST_NAME>/<EXTERNAL_HOST_NAME>:8020: retries get failed due to
> exceeded maximum allowed retries number: 1
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
> at
> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495)
> at
> org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:650)
> at
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:745)
> at org.apache.hadoop.ipc.Client$Connection.access$3200(Client.java:397)
> at org.apache.hadoop.ipc.Client.getConnection(Client.java:1618)
> at org.apache.hadoop.ipc.Client.call(Client.java:1449)
> at org.apache.hadoop.ipc.Client.call(Client.java:1396)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
> at com.sun.proxy.$Proxy8.getServiceStatus(Unknown Source)
> at
> org.apache.hadoop.ha.protocolPB.HAServiceProtocolClientSideTranslatorPB.getServiceStatus(HAServiceProtocolClientSideTranslatorPB.java:122)
> at org.apache.hadoop.ha.HAAdmin.getServiceState(HAAdmin.java:359)
> at org.apache.hadoop.ha.HAAdmin.runCmd(HAAdmin.java:457)
> at org.apache.hadoop.hdfs.tools.DFSHAAdmin.runCmd(DFSHAAdmin.java:120)
> at org.apache.hadoop.ha.HAAdmin.run(HAAdmin.java:384)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
> at org.apache.hadoop.hdfs.tools.DFSHAAdmin.main(DFSHAAdmin.java:132)
> {code}
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