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https://issues.apache.org/jira/browse/HBASE-9132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13730223#comment-13730223
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Hadoop QA commented on HBASE-9132:
----------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12596245/HBASE-9132-0.94.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/6612//console
This message is automatically generated.
> Use table dir modtime to avoid scanning table dir to check cached table
> descriptor in 0.94
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-9132
> URL: https://issues.apache.org/jira/browse/HBASE-9132
> Project: HBase
> Issue Type: Improvement
> Reporter: Dave Latham
> Assignee: Dave Latham
> Fix For: 0.94.12
>
> Attachments: HBASE-9132-0.94.patch
>
>
> As described in HBASE-8778, anything that needs to read table descriptors
> (such as region assignments) currently results in a table directory scan
> which is slow on tables with many regions. HBASE-8778 moved the table
> descriptors to a subdir for 0.96+. For 0.94 a smaller change that is safe
> with rolling restarts is to cache the directory modtime and use the cached
> table descriptor if the directory modtime has not changed since a table
> descriptor change always changes the directory.
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