Edit log buffer should not grow unboundedly
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Key: HDFS-1112
URL: https://issues.apache.org/jira/browse/HDFS-1112
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.22.0
Reporter: Hairong Kuang
Fix For: 0.22.0
Currently HDFS does not impose an upper limit on the edit log buffer. In case
there are a large number of open operations coming in with access time update
on, since open does not call sync automatically, there is a possibility that
the buffer grow to a large size, therefore causes memory leak and full GC in
extreme cases as described in HDFS-1104.
The edit log buffer should be automatically flushed when the buffer becomes
full.
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