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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15709) Handle large edits for asynchronous WAL
Date Mon, 24 Oct 2016 15:20:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15602288#comment-15602288
] 

stack commented on HBASE-15709:
-------------------------------

When we chunk, we are breaking the buffer at a checksum chunk boundary, not at some arbitrary
spot?

Go ahead commit it I'd say. We starting to play w/ it so bad stuff should show up soon if
any.

> Handle large edits for asynchronous WAL
> ---------------------------------------
>
>                 Key: HBASE-15709
>                 URL: https://issues.apache.org/jira/browse/HBASE-15709
>             Project: HBase
>          Issue Type: Sub-task
>          Components: io, wal
>    Affects Versions: 2.0.0
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: HBASE-15709-v1.patch, HBASE-15709.patch
>
>
> First, FanOutOneBlockAsyncDFSOutput can not work if the buffered data is larger than
PacketReceiver.MAX_PACKET_SIZE(16MB).
> Second, since we only allow one block here, we need to make sure we do not exceed the
block size after writing a large chunk of data.



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