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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