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Date: Fri, 9 Sep 2011 18:03:08 +0000 (UTC)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (CASSANDRA-3163) SlabAllocator OOMs much faster
 than HeapAllocator
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     [ https://issues.apache.org/jira/browse/CASSANDRA-3163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis updated CASSANDRA-3163:
--------------------------------------

    Attachment: 3163-v4.txt

v4 fixes NPE on sstable load

> SlabAllocator OOMs much faster than HeapAllocator
> -------------------------------------------------
>
>                 Key: CASSANDRA-3163
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3163
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.0.0
>         Environment: 3 nodes, 1G heap, RF=2
>            Reporter: Brandon Williams
>             Fix For: 1.0.0
>
>         Attachments: 3163-v2.txt, 3163-v3.txt, 3163-v4.txt, 3163.txt, system.log.gz
>
>
> SlabAllocator will OOM with stress at around 5.5M rows, which in this configuration is roughly 3.3M rows per node.  Reverting to the HeapAllocator allowed all 10M rows to finish.  Examining the SA heap dump in MAT just shows ~98% of the heap is in 'remainder'

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