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https://issues.apache.org/jira/browse/HBASE-4213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13151864#comment-13151864
]
Ted Yu commented on HBASE-4213:
-------------------------------
>From
>https://builds.apache.org/job/PreCommit-HBASE-Build/275//testReport/org.apache.hadoop.hbase.client/TestInstantSchemaChange/testInstantSchemaJanitor/:
{code}
java.net.SocketException: Too many open files
at sun.nio.ch.Net.socket0(Native Method)
at sun.nio.ch.Net.socket(Net.java:97)
at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:84)
{code}
The resource usage for tests in TestInstantSchemaChange is high.
I was able to run TestInstantSchemaChange successfully for several times on
MacBook.
> 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: 0.94.0
>
> Attachments: 4213-0.92.txt, 4213-0.92.v2, 4213-0.92.v4,
> 4213-101211-Support_instant_schema_changes_through_ZK.patch,
> 4213-102511.patch, 4213-Fixed_NPE_in_RS_during_alter_.patch,
> 4213-Instant_Schema_change_through_ZK.patch, 4213-Nov-2-2011_patch_.patch,
> 4213-Nov072011-Patch_to_support_concurrent_split_and_alter__.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-trunk-v2.txt,
> 4213-trunk.txt, 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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