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https://issues.apache.org/jira/browse/FLUME-734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118124#comment-13118124
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[email protected] commented on FLUME-734:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2129/
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Review request for Flume, Prasad Mujumdar and Eric Sammer.
Summary
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Output formats are now changed into function expressions and a new output
format is created for each customdfssink. (this happens when there are multiple
files being written by a escapedFormatDfs, and there was a shared outputformat
object).
commit 20a85af7d21a2a33c63903c794b4bd0d3dd2be02
Author: Jonathan Hsieh <[email protected]>
Date: Wed Aug 10 09:18:02 2011 -0700
FLUME-734: escapedFormatDfs goes into a file creation frenzy
This addresses bug flume-734.
https://issues.apache.org/jira/browse/flume-734
Diffs
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flume-core/src/main/java/com/cloudera/flume/conf/FlumeConfiguration.java
8ecfed1
flume-core/src/main/java/com/cloudera/flume/conf/SinkBuilderUtil.java 2aaa566
flume-core/src/main/java/com/cloudera/flume/handlers/hdfs/EscapedCustomDfsSink.java
20ebdfd
flume-core/src/test/java/com/cloudera/flume/handlers/hdfs/TestEscapedCustomOutputDfs.java
7618acd
flume-core/src/test/java/com/cloudera/flume/handlers/rolling/TestRollSink.java
1fd788f
Diff: https://reviews.apache.org/r/2129/diff
Testing
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Tests pass.
bq. From comments on jira, an earlier version of this patch is working for a
few folks already.
Thanks,
jmhsieh
> escapedFormatDfs goes into a file creation frenzy
> -------------------------------------------------
>
> Key: FLUME-734
> URL: https://issues.apache.org/jira/browse/FLUME-734
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v0.9.4
> Environment: CentOS 5.6
> Reporter: Eran Kutner
> Assignee: Jonathan Hsieh
> Priority: Critical
> Attachments: FLUME-734-draft.patch, flume.log
>
>
> Using this configuration:
> collectorSource(54001) | collector(600000) {
> escapedFormatDfs("hdfs://hadoop1-m1:8020/raw-events/%Y-%m-%d/",
> "events-%{rolltag}-col1.snappy", seqfile("SnappyCodec")) }
> The expected behavior is to see a new file created every 10 minutes. However,
> once in a while the collector would go into a file creation frenzy, creating
> new files every second.
> The log indicates that writing has failed with error: "OutputFormat instance
> can only write to the same OutputStream" causing the file to be closed a new
> one to be opened just to be closed again.
> Looking at the code I'm not even sure how the output stream could change but
> the behavior I'm seeing feels like some sort of a race condition. It is
> happening much more under heavy load than under low load.
> See attached log excerpt.
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