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Posted to hdfs-dev@hadoop.apache.org by "qus-jiawei (JIRA)" <ji...@apache.org> on 2013/10/11 04:33:50 UTC
[jira] [Created] (HDFS-5341) DirectoryScanner hold the object lock
dataset too long in scan,it make the datanode turn into deadnode and block
all reciving thread
qus-jiawei created HDFS-5341:
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Summary: DirectoryScanner hold the object lock dataset too long in scan,it make the datanode turn into deadnode and block all reciving thread
Key: HDFS-5341
URL: https://issues.apache.org/jira/browse/HDFS-5341
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 2.0.4-alpha
Reporter: qus-jiawei
When DirectoryScanner doing the scan function, it holding the dataset to diff the block info between memory and disk.But it do a lot of disk operation because it call the file's getlength funciton.
So,such disk operation should move to the diskreport.
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