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Date: Thu, 4 May 2017 21:40:04 +0000 (UTC)
From: "Junping Du (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.13057926.1490108980000.130954.1493934004483@Atlassian.JIRA>
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Subject: [jira] [Commented] (HADOOP-14207) "dfsadmin -refreshCallQueue"
 fails with DecayRpcScheduler
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archived-at: Thu, 04 May 2017 21:40:10 -0000


    [ https://issues.apache.org/jira/browse/HADOOP-14207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15997478#comment-15997478 ] 

Junping Du commented on HADOOP-14207:
-------------------------------------

Thanks [~surendrasingh] for working out a patch and [~xyao] for review.
Reopen for 2.8.1. [~surendrasingh], can you provide a patch for 2.8.1 as well (patch name with branch-2.8.1 as postfix)?

> "dfsadmin -refreshCallQueue" fails with DecayRpcScheduler
> ---------------------------------------------------------
>
>                 Key: HADOOP-14207
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14207
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: rpc-server
>            Reporter: Surendra Singh Lilhore
>            Assignee: Surendra Singh Lilhore
>            Priority: Blocker
>             Fix For: 2.9.0, 3.0.0-alpha3
>
>         Attachments: HADOOP-14207.001.patch, HADOOP-14207.002.patch, HADOOP-14207.003.patch, HADOOP-14207.004.patch, HADOOP-14207.005.patch, HADOOP-14207.006.patch
>
>
> {noformat}
> java.lang.RuntimeException: org.apache.hadoop.ipc.DecayRpcScheduler could not be constructed.
>         at org.apache.hadoop.ipc.CallQueueManager.createScheduler(CallQueueManager.java:89)
>         at org.apache.hadoop.ipc.CallQueueManager.swapQueue(CallQueueManager.java:260)
>         at org.apache.hadoop.ipc.Server.refreshCallQueue(Server.java:650)
>         at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.refreshCallQueue(NameNodeRpcServer.java:1582)
>         at org.apache.hadoop.ipc.protocolPB.RefreshCallQueueProtocolServerSideTranslatorPB.refreshCallQueue(RefreshCallQueueProtocolServerSideTranslatorPB.java:49)
>         at org.apache.hadoop.ipc.proto.RefreshCallQueueProtocolProtos$RefreshCallQueueProtocolService$2.callBlockingMethod(RefreshCallQueueProtocolProtos.java:769)
>         at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:447)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
>         at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:845)
>         at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:788)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:422)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1807)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2455)
> Caused by: org.apache.hadoop.metrics2.MetricsException: Metrics source DecayRpcSchedulerMetrics2.ipc.65110 already exists!
>         at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newSourceName(DefaultMetricsSystem.java:144)
>         at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.sourceName(DefaultMetricsSystem.java:117)
> {noformat}


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