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[HDFS-3177] Allow DFSClient to find out and use the CRC type being used for a file. - HDFS - [issue]
...To support HADOOP-8060, DFSClient should be able to find out the checksum type being used for files in hdfs.In my prototype, DataTransferProtocol was extended to include the checksum type in...
http://issues.apache.org/jira/browse/HDFS-3177    Author: Kihwal Lee, 2012-08-25, 15:00
Re: PreCommit-HDFS-Build stuck - HDFS - [mail # dev]
...I think the build job was blocked on I/O to the Jenkins master over ssh for more than 6 hours. The slave eventually detected connection closure and the build terminated in 8 hours.   Si...
   Author: Kihwal Lee, 2012-08-23, 14:47
PreCommit-HDFS-Build stuck - HDFS - [mail # dev]
...#3073 is stuck. It has been saying its running TestHASafMode for more than  three hours. It's not timing out.   Can Somebody with a Jenkins access please bounce this?  ...
   Author: Kihwal Lee, 2012-08-23, 04:49
[HDFS-3717] Test cases in TestPBHelper fail - HDFS - [issue]
...org.apache.hadoop.hdfs.protocolPB.TestPBHelper.testConvertBlockCommandorg.apache.hadoop.hdfs.protocolPB.TestPBHelper.testConvertLocatedBlockorg.apache.hadoop.hdfs.protocolPB.TestPBHelper.tes...
http://issues.apache.org/jira/browse/HDFS-3717    Author: Kihwal Lee, 2012-07-24, 21:44
[HDFS-3032] Lease renewer tries forever even if renewal is not possible - HDFS - [issue]
...When LeaseRenewer gets an IOException while attempting to renew for a client, it retries after sleeping 500ms. If the exception is caused by a condition that will never change, it keeps talk...
http://issues.apache.org/jira/browse/HDFS-3032    Author: Kihwal Lee, 2012-03-06, 13:30
Re: Problem in NetUtils - HDFS - [mail # dev]
...0.21 is not actively maintained. The bug was fixed in other active branches (0.20-security, 0.22, 0.23, etc. ) and trunk.  Kihwal  On 10/12/11 7:50 PM, "Beckham007"  wrote: &n...
   Author: Kihwal Lee, 2011-10-13, 03:33
Re: corrupted edits log after power failure - HDFS - [mail # dev]
...Does the backup process include syncing? On-drive write cache can also tric k you. For absolutely critical data, it is a good idea to use a controller with ba ttery-backed write cache or a s...
   Author: Kihwal Lee, 2011-09-22, 17:37
Re: Number of bytes per checksum - HDFS - [mail # dev]
...Doing CRC32 on a huge data block also reduces its error detection capability.  If you need more information on this topic, this paper will be a good starting poing:   http://www.ec...
   Author: Kihwal Lee, 2011-06-24, 14:59
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