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https://issues.apache.org/jira/browse/HBASE-16664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567389#comment-15567389
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Duo Zhang commented on HBASE-16664:
-----------------------------------
{noformat}
* This class is NOT thread safe for reads nor writes.
* In the case of writes (Put, Delete), the underlying write buffer can
* be corrupted if multiple threads contend over a single HTable instance.
* In the case of reads, some fields used by a Scan are shared among all
threads.
{noformat}
HTable is not thread safe so it is not a good idea to share one HTable. The
right approach is to share one Connection instance and use new Table instance
every time.
And I think for a user, I call the batch method, or the multi get method, to me
it is one operation. I can increase the operation timeout if I want.
> Timeout logic in AsyncProcess is broken
> ---------------------------------------
>
> Key: HBASE-16664
> URL: https://issues.apache.org/jira/browse/HBASE-16664
> Project: HBase
> Issue Type: Bug
> Reporter: Phil Yang
> Assignee: Phil Yang
> Attachments: 1.patch, HBASE-16664-branch-1-v1.patch,
> HBASE-16664-branch-1-v1.patch, HBASE-16664-branch-1.1-v1.patch,
> HBASE-16664-branch-1.2-v1.patch, HBASE-16664-branch-1.3-v1.patch,
> HBASE-16664-v1.patch, HBASE-16664-v2.patch, HBASE-16664-v3.patch,
> HBASE-16664-v4.patch, HBASE-16664-v5.patch, testhcm.patch
>
>
> Have not checked the root cause, but I think timeout of all operations in
> AsyncProcess is broken
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