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https://issues.apache.org/jira/browse/YARN-6798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16087719#comment-16087719
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Ray Chiang commented on YARN-6798:
----------------------------------
Finally got a bit of time to look at the previous patches. I see a minor issue.
|| Patch || LevelDBKey(s) || Hadoop Versions || Commit Date ||
| YARN-5049 | queued | 3.0.0-alpha1 | May 11, 2016 |
| YARN-6127 | AMRMProxy/NextMasterKey | (2.9.0, 3.0.0-alpha4) | June 22, 2017 |
So, branch-2 has just YARN-6127, while trunk has YARN-5049 and YARN-6127. If
we label YARN-5049 as 1.1 and YARN-6127 as 1.2, then branch-2's having a 1.2
version won't quite be accurate. If do the reverse, we'd be chronologically
backward (which seems okay to me, but I'd like a second opinion).
> 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
> Assignee: Ray Chiang
> Attachments: YARN-6798.v1.patch
>
>
> 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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