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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7358) Clients may get stuck waiting when using ByteArrayManager
Date Wed, 05 Nov 2014 00:01:34 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7358?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze updated HDFS-7358:
--------------------------------------
    Attachment: h7358_20141104_wait_timeout.patch

[~stack], let's add a wait timeout to see if the clients still get stuck.  If no, the bug
is in ByteArrayManager since there are released arrays but the allocate calls remain blocked.
 If yes, it means that there is no one releasing arrays so that clients have to wait; the
bug may be outside ByteArrayManager.  Could you try the patch below?

h7358_20141104_wait_timeout.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_wait_timeout.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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