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https://issues.apache.org/jira/browse/HBASE-16890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15604156#comment-15604156
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ramkrishna.s.vasudevan commented on HBASE-16890:
------------------------------------------------
{code}
if (NativeCrc32.isAvailable()) {
NativeCrc32.calculateChunkedSumsByteArray(bytesPerChecksum, type.id,
sums, sumsOffset, data, dataOffset, dataLength);
return;
}
{code}
I see. I thought this is a NativeCrc32 that needs to be available in my system.
And I was not sure if that was working for me. I can verify that once. But if
that works then DBB is not an issue. Thanks @Duo.
> Analyze the performance of AsyncWAL and fix the same
> ----------------------------------------------------
>
> Key: HBASE-16890
> URL: https://issues.apache.org/jira/browse/HBASE-16890
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0
>
> Attachments: contention.png, contention_defaultWAL.png
>
>
> Tests reveal that AsyncWAL under load in single node cluster performs slower
> than the Default WAL. This task is to analyze and see if we could fix it.
> See some discussions in the tail of JIRA HBASE-15536.
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