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[HDFS-6833] DirectoryScanner should not register a deleting block with memory of DataNode - HDFS - [issue]
...When a block is deleted in DataNode, the following messages are usually output.2014-08-07 17:53:11,606 INFO org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetAsyncDiskService: S...
http://issues.apache.org/jira/browse/HDFS-6833    Author: Shinichi Yamashita, 2014-08-29, 09:39
[HDFS-5552] Fix wrong information of "Cluster summay" in dfshealth.html - HDFS - [issue]
..."files and directories" + "blocks" = total filesystem object(s). But wrong value is displayed....
http://issues.apache.org/jira/browse/HDFS-5552    Author: Shinichi Yamashita, 2014-02-24, 20:58
[HDFS-5686] Cannot upgrade the layout version with -49 from -48 - HDFS - [issue]
...When we upgraded the layout version from -48 to -49, the following exception output. 2013-12-19 13:02:28,143 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Starting upgrade of image di...
http://issues.apache.org/jira/browse/HDFS-5686    Author: Shinichi Yamashita, 2013-12-19, 05:29
[HDFS-5180] Output the processing time of slow RPC request to node's log - HDFS - [issue]
...In current trunk, it is output at DEBUG level for the processing time of all RPC requests to log.When we treat it by the troubleshooting of the large-scale cluster, it is hard to handle the ...
http://issues.apache.org/jira/browse/HDFS-5180    Author: Shinichi Yamashita, 2013-11-12, 07:20
[HDFS-5362] Add SnapshotException to terse exception group - HDFS - [issue]
...In trunk, a stack trace of SnapshotException is output NameNode's log via ipc.Server class.The trace of the output method is easy for the message of SnapshotException.So, it should add Snaps...
http://issues.apache.org/jira/browse/HDFS-5362    Author: Shinichi Yamashita, 2013-10-18, 07:58
[HDFS-5360] Improvement of usage message of renameSnapshot and deleteSnapshot - HDFS - [issue]
...When the argument of "hdfs dfs -createSnapshot" comamnd is inappropriate, it is displayed as follows.[hadoop@trunk ~]$ hdfs dfs -createSnapshot-createSnapshot: <snapshotDir> is missing...
http://issues.apache.org/jira/browse/HDFS-5360    Author: Shinichi Yamashita, 2013-10-17, 15:28
[HDFS-4977] Change "Checkpoint Size" of web ui of SecondaryNameNode - HDFS - [issue]
...The checkpoint of SecondaryNameNode after 2.0 is carried out by "dfs.namenode.checkpoint.period" and "dfs.namenode.checkpoint.txns".Because "Checkpoint Size" displayed in status.jsp of Secon...
http://issues.apache.org/jira/browse/HDFS-4977    Author: Shinichi Yamashita, 2013-07-12, 19:51
Re: How to change topology - HDFS - [mail # user]
...Hi Steve,  Thank you for your reply.   I confirmed it in my cluster, and I understood it as follows. First, the resolved node information is recorded in ConcurrentHashMap. Next sam...
   Author: Shinichi Yamashita, 2012-10-09, 15:51
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