[HBASE-19433] ChangeSplitPolicyAction modifies an immutable HTableDescriptor

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.0.0-beta-1, 2.0.0
• Component/s: integration tests
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Josh Elser
• Created: 05/Dec/17 23:14
• Updated: 01/Aug/18 06:22
• Resolved: 08/Dec/17 03:46

Description

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)

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?