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https://issues.apache.org/jira/browse/HBASE-12835?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14271978#comment-14271978
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Enis Soztutar commented on HBASE-12835:
---------------------------------------
One example is TestAcidGuarantees. When run with
{code}
hbase org.apache.hadoop.hbase.TestAcidGuarantees -Dmillis=60000
-DnumWriters=150 -DnumGetters=50 -DnumScanners=15 -DnumUniqueRows=25 2>&1 | tee
/tmp/acid.log
{code}
It actually launches hundreds of connections because it uses {{new HTable(Conf,
TableName)}}.
> HBASE-12422 changed new HTable(Configuration) to not use managed Connections
> anymore
> ------------------------------------------------------------------------------------
>
> Key: HBASE-12835
> URL: https://issues.apache.org/jira/browse/HBASE-12835
> Project: HBase
> Issue Type: Bug
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
> Fix For: 1.0.0, 1.1.0
>
>
> While debugging something else, I've noticed that HBASE-12422 changed it so
> that new HTable(Configuration, TableName) is not using managed connections
> anymore.
> I thought the plan was to keep new HTable(Conf, TableName) to still use
> managed connections, but allow the new APIs to have un-managed connections.
> With HBASE-12422, there is a big compatibility change for used of the HTable
> interface that suddenly they will be launching connections per HTable
> instance which is a behavioral change and expensive (with all the meta cache,
> zk threads, thread pool, etc). I fear that this will catch unsuspecting users
> by surprise, that is why I think we should revert back to the deprecated
> behavior for 1.0. For master we do not need to make the change, but document
> it.
> [~sduskis], [[email protected]], [~ndimiduk] what do you guys think?
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