HA: Put a cap on the number of completed edits files retained by the NN
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Key: HDFS-2946
URL: https://issues.apache.org/jira/browse/HDFS-2946
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ha, name-node
Affects Versions: HA branch (HDFS-1623)
Reporter: Aaron T. Myers
Assignee: Aaron T. Myers
HDFS-2794 added a minimum number of transactions to retain in edits files.
Since many underlying file systems put a cap on the number of entries in a
single directory, we should put a cap on the number of edits files which will
be retained by the NN.
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