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https://issues.apache.org/jira/browse/HBASE-4213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144773#comment-13144773
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Subbu M Iyer commented on HBASE-4213:
-------------------------------------
JD,
Fixed the NPE that is causing the RS to die. All tests pass and don't see this
exception.
Would be great if you can give it one more try with your concurrent alter +
split scenario. I am also adding a test case for the concurrent split + alter
scenario and I am validating the same.
> Support for fault tolerant, instant schema updates with out master's
> intervention (i.e with out enable/disable and bulk assign/unassign) through
> ZK.
> ----------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-4213
> URL: https://issues.apache.org/jira/browse/HBASE-4213
> Project: HBase
> Issue Type: Improvement
> Reporter: Subbu M Iyer
> Assignee: Subbu M Iyer
> Fix For: 0.92.0
>
> Attachments: 4213-0.92.txt,
> 4213-101211-Support_instant_schema_changes_through_ZK.patch,
> 4213-102511.patch, 4213-Instant_Schema_change_through_ZK.patch,
> 4213-Nov-2-2011_patch_.patch,
> 4213-V10-Support_instant_schema_changes_through_ZK.patch,
> 4213-V5-Support_instant_schema_changes_through_ZK.patch,
> 4213-V7-Support_instant_schema_changes_through_ZK.patch,
> 4213-V8-Support_instant_schema_changes_through_ZK.patch,
> 4213-V9-Support_instant_schema_changes_through_ZK.patch, 4213-v9.txt,
> 4213.v6, HBASE-4213-Instant_schema_change.patch,
> HBASE-4213_Instant_schema_change_-Version_2_.patch,
> HBASE_Instant_schema_change-version_3_.patch
>
>
> This Jira is a slight variation in approach to what is being done as part of
> https://issues.apache.org/jira/browse/HBASE-1730
> Support instant schema updates such as Modify Table, Add Column, Modify
> Column operations:
> 1. With out enable/disabling the table.
> 2. With out bulk unassign/assign of regions.
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