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https://issues.apache.org/jira/browse/HBASE-15536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15393354#comment-15393354
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ramkrishna.s.vasudevan commented on HBASE-15536:
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And to make things clear, the
org.apache.hadoop.hbase.io.ByteBufferSupportOutputStream was not there
previously in trunk and hence we were not able to get the offheap cells to be
written to WAL without bringing them onheap.
In addition to that since AsyncWAL solves the perf penalty of using the
hadoop's outputstream we are able to see good benefits wokring with AsyncWAL.
> Make AsyncFSWAL as our default WAL
> ----------------------------------
>
> Key: HBASE-15536
> URL: https://issues.apache.org/jira/browse/HBASE-15536
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Fix For: 2.0.0
>
> Attachments: HBASE-15536-v1.patch, HBASE-15536-v2.patch,
> HBASE-15536-v3.patch, HBASE-15536-v4.patch, HBASE-15536-v5.patch,
> HBASE-15536.patch
>
>
> As it should be predicated on passing basic cluster ITBLL
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