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From "Ray Chiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6798) NM startup failure with old state store due to version mismatch
Date Mon, 10 Jul 2017 20:39:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16081105#comment-16081105
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Ray Chiang commented on YARN-6798:
----------------------------------

[~kkaranasos], [~subru], [~botong], [~asuresh].  It looks like you guys bumped the NM version
twice.  Is this behavior desirable or is it preferable to have more compatible state store
versions (i.e. 1.0 -> 1.1 -> 1.2 instead of 1.0 -> 2.0 -> 3.0).

Plus, anyone else who has thoughts about NM rolling upgrade, please chime in.

> NM startup failure with old state store due to version mismatch
> ---------------------------------------------------------------
>
>                 Key: YARN-6798
>                 URL: https://issues.apache.org/jira/browse/YARN-6798
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: nodemanager
>    Affects Versions: 3.0.0-alpha4
>            Reporter: Ray Chiang
>
> YARN-6703 rolled back the state store version number for the RM from 2.0 to 1.4.
> YARN-6127 bumped the version for the NM to 3.0
>     private static final Version CURRENT_VERSION_INFO = Version.newInstance(3, 0);
> YARN-5049 bumped the version for the NM to 2.0
>     private static final Version CURRENT_VERSION_INFO = Version.newInstance(2, 0);
> During an upgrade, all NMs died after upgrading a C6 cluster from alpha2 to alpha4.
> {noformat}
> 2017-07-07 15:48:17,259 FATAL org.apache.hadoop.yarn.server.nodemanager.NodeManager:
Error starting NodeManager
> org.apache.hadoop.service.ServiceStateException: java.io.IOException: Incompatible version
for NM state: expecting NM state version 3.0, but loading version 2.0
>         at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:105)
>         at org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:246)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:307)
>         at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:748)
>         at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:809)
> Caused by: java.io.IOException: Incompatible version for NM state: expecting NM state
version 3.0, but loading version 2.0
>         at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.checkVersion(NMLeveldbStateStoreService.java:1454)
>         at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:1308)
>         at org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:307)
>         at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
>         ... 5 more
> 2017-07-07 15:48:17,277 INFO org.apache.hadoop.yarn.server.nodemanager.NodeManager: SHUTDOWN_MSG:
> /************************************************************
> SHUTDOWN_MSG: Shutting down NodeManager at xxx.gce.cloudera.com/aa.bb.cc.dd
> ************************************************************/
> {noformat}



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