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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7358) Clients may get stuck waiting when using ByteArrayManager
Date Mon, 10 Nov 2014 16:59:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14204987#comment-14204987

stack commented on HDFS-7358:

In hbase we do 16k dfs.bytes-per-checksum Thanks for filing the 64k issue. I was going to
ask. Instead let me dig and try and add findings to new issue.

I tried the patch on my little rig and it works; no more getting stuck.

We need all this new synchronization on Packet? Any chance of instead tracing to figure where
a Packet might be referenced (and we'd go writeData to the released internal buf) after its
been closed? (Is this how you fixed TestHFlush?)

nit: rename setClosed to close if you end up making a new patch.

> Clients may get stuck waiting when using ByteArrayManager
> ---------------------------------------------------------
>                 Key: HDFS-7358
>                 URL: https://issues.apache.org/jira/browse/HDFS-7358
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>         Attachments: h7358_20141104.patch, h7358_20141104_wait_timeout.patch, h7358_20141105.patch,
h7358_20141106.patch, h7358_20141107.patch, h7358_20141108.patch
> [~stack] reported that clients might get stuck waiting when using ByteArrayManager; see
[his comments|https://issues.apache.org/jira/browse/HDFS-7276?focusedCommentId=14197036&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14197036].

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