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https://issues.apache.org/jira/browse/HBASE-17048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15695110#comment-15695110
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ramkrishna.s.vasudevan commented on HBASE-17048:
------------------------------------------------
Actually we already use buf.readableBytes. That is enough I believe as in first
patch. But I felt since we are adding a class it will be better to pass on the
bytesWritten as and when we write.
If we directly use buf.readableBytes then I think may be we don't need this
extra new class itself and only add this guess() as an internal private API in
the FanOutOneBlockAsyncDFSOutput.
> 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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