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https://issues.apache.org/jira/browse/HBASE-17048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15695086#comment-15695086
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Anoop Sam John commented on HBASE-17048:
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bq.We already know what length we want.
Fine. In that case, can ask alloc directly to do the allocation.. In other
cases, we can ask the wrapper allocator of ours to do it. This is what u do now
also.. Only thing is why can not pass alloc as constructor arg then so it will
behave as if an allocator. After every write to buf, we pass the length for
update again to the new allocator seems bit odd. There is no way to get the
bytesWritten from the buf itself?
> Introduce a helper class to calcuate suitable ByteBuf size when allocating
> send buffer in FanOutOneBlockAsyncDFSOutputHelper
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-17048
> URL: https://issues.apache.org/jira/browse/HBASE-17048
> Project: HBase
> Issue Type: Sub-task
> Components: wal
> Affects Versions: 2.0.0
> Reporter: Duo Zhang
> Assignee: ramkrishna.s.vasudevan
> Fix For: 2.0.0
>
> Attachments: HBASE-17012_3.patch, HBASE-17048.patch,
> HBASE-17048_1.patch
>
>
> As [~ram_krish] mentioned in HBASE-17021
> https://issues.apache.org/jira/browse/HBASE-17021?focusedCommentId=15646938&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15646938
> The default ByteBuf size is 256B which is too small.
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