FAQ
Startup sanity data directory check in main loop.
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Key: HADOOP-446
URL: http://issues.apache.org/jira/browse/HADOOP-446
Project: Hadoop
Issue Type: Bug
Components: dfs
Affects Versions: 0.5.0
Reporter: Benjamin Reed
Priority: Minor


In the overall scheme of things this is probably a nit, but in the run() method of DataXceiveServer in DataNode.java the method "data.checkDataDir()" is called right after the socket accept. data.checkDataDir() is a sanity check that makes sure the data directory is setup properly. It is a good sanity check to do when the server is started, but it seems like a bit of a waste to do it after every socket accept. If something happens that causes the sanity check to fail, you would end up finding out about it during the processing of the request anyway.

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postedAug 10, '06 at 9:15p
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