hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-900) Regionserver memory leak causing OOME during relatively modest bulk importing
Date Wed, 17 Dec 2008 19:39:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12657505#action_12657505
] 

stack commented on HBASE-900:
-----------------------------

Looking more at why I can make an OOME writing small cells, I see the MapFile indices starting
to come to the fore.  I counted 90MB of indices in a heap of 11 regions and 45 storefiles.
 A few were up in the 20+MB range.  Accounting for this size, I'll leave aside for 0.19.0
release (As is, can't get at the index anyways in current MapFile, not unless we brought MapFile
local -- lets not do that for 0.19.0 release).

> Regionserver memory leak causing OOME during relatively modest bulk importing
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-900
>                 URL: https://issues.apache.org/jira/browse/HBASE-900
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.18.1, 0.19.0
>            Reporter: Jonathan Gray
>            Assignee: stack
>            Priority: Blocker
>         Attachments: 900-part2-v4.patch, 900-part2-v5.patch, 900-part2-v7.patch, 900-part2.patch,
900.patch, hbase-900-part3.patch, memoryOn13.png
>
>
> I have recreated this issue several times and it appears to have been introduced in 0.2.
> During an import to a single table, memory usage of individual region servers grows w/o
bounds and when set to the default 1GB it will eventually die with OOME.  This has happened
to me as well as Daniel Ploeg on the mailing list.  In my case, I have 10 RS nodes and OOME
happens w/ 1GB heap at only about 30-35 regions per RS.  In previous versions, I have imported
to several hundred regions per RS with default heap size.
> I am able to get past this by increasing the max heap to 2GB.  However, the appearance
of this in newer versions leads me to believe there is now some kind of memory leak happening
in the region servers during import.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message