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https://issues.apache.org/jira/browse/HBASE-19433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16280661#comment-16280661
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Ted Yu commented on HBASE-19433:
--------------------------------
There are two aspects w.r.t. applying split policy:
1. tableDescriptor.setRegionSplitPolicyClassName() is called to set potentially
same split policy
2. test that different split policies would not result in data loss
This JIRA is about #1 whose code path would always be exercised.
For #2, should I file a different issue so that different split policy is
chosen than the currently active one ?
> ChangeSplitPolicyAction modifies an immutable HTableDescriptor
> --------------------------------------------------------------
>
> Key: HBASE-19433
> URL: https://issues.apache.org/jira/browse/HBASE-19433
> Project: HBase
> Issue Type: Bug
> Components: integration tests
> Reporter: Josh Elser
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 2.0.0-beta-1
>
> Attachments: 19433.v1.txt, 19433.v2.txt, 19433.v3.txt
>
>
> {noformat}
> 2017-12-01 23:18:51,433 WARN [ChaosMonkeyThread] policies.Policy: Exception
> occurred during performing action: java.lang.UnsupportedOperationException:
> HTableDescriptor is read-only
> at
> org.apache.hadoop.hbase.client.ImmutableHTableDescriptor.getDelegateeForModification(ImmutableHTableDescriptor.java:59)
> at
> org.apache.hadoop.hbase.HTableDescriptor.setRegionSplitPolicyClassName(HTableDescriptor.java:333)
> at
> org.apache.hadoop.hbase.chaos.actions.ChangeSplitPolicyAction.perform(ChangeSplitPolicyAction.java:54)
> at
> org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy.runOneIteration(PeriodicRandomActionPolicy.java:59)
> at
> org.apache.hadoop.hbase.chaos.policies.PeriodicPolicy.run(PeriodicPolicy.java:41)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> Found during some internal testing. Need to make sure this Action, in
> addition to the other, don't fall into the trap of modifying the
> TableDescriptor obtained from Admin.
> [~tedyu], want to take a stab at it?
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