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[HDFS-2175] Removing  lease repeatedly when client lease reach to hard limit - HDFS - [issue]
...Client created file at NameNode and following crashed down. It did not write any byte to HDFS. After one hour, the NameNode aware that it need to close file and reclaim lease. Here have two ...
http://issues.apache.org/jira/browse/HDFS-2175    Author: Denny Ye, 2013-08-15, 18:26
[HDFS-2049] Should add the column name tips for HDFS shell command - HDFS - [issue]
...:abc:root > bin/hadoop fs -count -q /ABC11/06/07 18:05:54 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=30000011/06/07 18:0...
http://issues.apache.org/jira/browse/HDFS-2049    Author: Denny Ye, 2012-11-20, 03:08
Re: How to find EOF - HDFS - [mail # user]
...DFSInputStream.available();  2012/6/13 Mohammad Tariq  ...
   Author: Denny Ye, 2012-06-13, 00:17
[HDFS-3471] NullPointerException when NameNode is closing - HDFS - [issue]
...In local environment, there is NPE when NameNode is closing. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++2012-05-28 08:54:33,139 INFO org.apache.hadoop.ipc.Server: IPC S...
http://issues.apache.org/jira/browse/HDFS-3471    Author: Denny Ye, 2012-05-28, 09:32
Does NameNode directory need fine-grained path lock? - HDFS - [mail # user]
...hi guys,     Currently, NameNode uses read-write lock at top root folder. In my opinion, it's too huge for whole namespace with million of file/folder. Meanwhile, a few level folde...
   Author: Denny Ye, 2012-05-08, 08:15
[HDFS-3152] Reading consistency for all readers - HDFS - [issue]
...I met an exception when I would like to seek to latest size of file that another client was writing. Message is "Cannot seek after EOF". I got the seek target from previous input stream and ...
http://issues.apache.org/jira/browse/HDFS-3152    Author: Denny Ye, 2012-03-26, 08:20
[HDFS-2749] Wrong fsimage format while entering recovery mode - HDFS - [issue]
...hadoop is into a recovery mode and save namespace to disk before the system starting service. however, there are many situation will cause hadoop enter recovery mode like missing VERSION fil...
http://issues.apache.org/jira/browse/HDFS-2749    Author: Denny Ye, 2012-03-16, 04:55
[HDFS-3063] NameNode should validate all coming file path - HDFS - [issue]
...NameNode provides RPC service for not only DFS client but also user defined program. A common case we always met is that user transfers file path prefixed with HDFS protocol("hdfs://{namenod...
http://issues.apache.org/jira/browse/HDFS-3063    Author: Denny Ye, 2012-03-10, 04:24
Re: Nonempty files become empty after being saved to Hdfs. - HDFS - [mail # user]
...hi Peter,     There is no any operation log? Please using the state change log with debug level.     I checked the code for creating 'symlink'. It looks like regular oper...
   Author: Denny Ye, 2012-02-24, 07:55
Re: Replication - HDFS - [mail # user]
...hi Ajay     Does the file that related with that blockId(blk_4884628009930930282_210741) has being existed at HDFS?     Your setting is right for new file to HDFS after t...
   Author: Denny Ye, 2012-02-17, 02:40
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