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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6349) Implement FastLZCodec for fastlz/lzo algorithm
Date Mon, 02 Nov 2009 02:28:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772405#action_12772405
] 

Todd Lipcon commented on HADOOP-6349:
-------------------------------------

There seems to be a bug in the code somewhere - I set the count = 100000 in the TestCodec
class (and commented out all the other codecs but fastlz) and it now crashes with a heap space
error. If I run the test with -Xmx4g, it crashes with an EOFException. The seed -400483164
reproduces this reliably. Another seed that produces a different stack trace is -717812827

We should have a "slow" version of TestCodec which iterates through a few thousand different
random seeds and random data lengths to ensure that the codec is robust.

> Implement FastLZCodec for fastlz/lzo algorithm
> ----------------------------------------------
>
>                 Key: HADOOP-6349
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6349
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: io
>            Reporter: William Kinney
>         Attachments: HADOOP-6349.patch, TestCodecPerformance.java, testCodecPerfResults.tsv
>
>
> Per  [HADOOP-4874|http://issues.apache.org/jira/browse/HADOOP-4874], FastLZ is a good
(speed, license) alternative to LZO. 

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