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https://issues.apache.org/jira/browse/HDFS-7258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14183449#comment-14183449
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Colin Patrick McCabe commented on HDFS-7258:
--------------------------------------------
Thanks, [~xyao] and [~wheat9].
> CacheReplicationMonitor rescan schedule log should use DEBUG level instead of
> INFO level
> ----------------------------------------------------------------------------------------
>
> Key: HDFS-7258
> URL: https://issues.apache.org/jira/browse/HDFS-7258
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.6.0
> Reporter: Xiaoyu Yao
> Assignee: Xiaoyu Yao
> Priority: Minor
> Fix For: 2.7.0
>
> Attachments: HDFS-7258.0.patch, HDFS-7258.1.patch
>
>
> CacheReplicationMonitor rescan scheduler adds two INFO log entries every 30
> seconds to HDSF NN log as shown below. This should be a DEBUG level log to
> avoid flooding the namenode log.
> 2014-10-17 07:52:30,265 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
> 2014-10-17 07:52:30,265 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:53:00,265 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30001 milliseconds
> 2014-10-17 07:53:00,266 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 1 millisecond(s).
> 2014-10-17 07:53:30,267 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30001 milliseconds
> 2014-10-17 07:53:30,267 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:54:00,267 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30001 milliseconds
> 2014-10-17 07:54:00,268 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:54:30,268 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30001 milliseconds
> 2014-10-17 07:54:30,269 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:55:00,269 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
> 2014-10-17 07:55:00,269 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 1 millisecond(s).
> 2014-10-17 07:55:30,268 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
> 2014-10-17 07:55:30,269 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:56:00,269 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30001 milliseconds
> 2014-10-17 07:56:00,270 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:56:30,270 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30001 milliseconds
> 2014-10-17 07:56:30,271 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 0 millisecond(s).
> 2014-10-17 07:57:00,271 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
> 2014-10-17 07:57:00,272 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 1 millisecond(s).
> 2014-10-17 07:57:30,271 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
> 2014-10-17 07:57:30,272 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 1 millisecond(s).
> 2014-10-17 07:58:00,271 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
> 2014-10-17 07:58:00,271 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Scanned 0 directive(s) and 0 block(s) in 1 millisecond(s).
> 2014-10-17 07:58:30,271 INFO
> org.apache.hadoop.hdfs.server.blockmanagement.CacheReplicationMonitor:
> Rescanning after 30000 milliseconds
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