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[HDFS-8980] Remove unnecessary block replacement in INodeFile
...HDFS-8801 brings in BlockUnderConstructionFeature for BlockInfo thus the complete/UC block conversion happens on the same BlockInfo object. This jira plans to cleanup the current code to rem...
, 2015-09-01, 00:05
[HDFS-5714] Use byte array to represent UnderConstruction feature and Snapshot feature for INodeFile
...Currently we define specific classes to represent different INode features, such as FileUnderConstructionFeature and FileWithSnapshotFeature. While recording these feature information in mem...
, 2015-08-28, 09:37
[HDFS-8930] Block report lease may leak if the 2nd full block report comes when NN is still in safemode
...This is a rare scenario in practice. If the NameNode is still in startup SafeMode while a DataNode sends it the 2nd FBR, the NameNode assigns the lease but rejects the report. The lease then...
, 2015-08-25, 00:00
[HDFS-8877] Allow bypassing some minor exceptions while loading editlog
...Usually when users hit editlog corruption like HDFS-7587, before upgrading to a new version with the bug fix, a customized jar has to be provided by developers first to bypass the exception ...
, 2015-08-08, 06:58
[HDFS-8804] Erasure Coding: use DirectBufferPool in DFSStripedInputStream for buffer allocation
...Currently we directly allocate direct ByteBuffer in DFSStripedInputstream for the stripe buffer and the buffers holding parity data. It's better to get ByteBuffer from DirectBufferPool....
, 2015-08-04, 23:48
[HDFS-8127] NameNode Failover during HA upgrade can cause DataNode to finalize upgrade
...Currently for HA upgrade (enabled by HDFS-5138), we use -bootstrapStandby to initialize the standby NameNode. The standby NameNode does not have the previous directory thus it does not know ...
, 2015-08-04, 22:20
[HDFS-5013] Improve HDFS HA document
...Currently the HA document does not contain a lot of information about how to make QJM work with security enabled. We may improve the document by adding this part in. Also, some more details ...
, 2015-07-24, 08:08
[HDFS-8797] WebHdfsFileSystem creates too many connections for pread
...While running a test we found that WebHdfsFileSystem can create several thousand connections when doing a position read of a 200MB file. For each connection the client will connect to the Da...
, 2015-07-23, 16:40
[HDFS-7728] Avoid updating quota usage while loading edits
...Per the discussion here, currently we call INode#addSpaceConsumed while file/dir/snapshot deletion, even if this is still in the edits loading process. This is unnecessary and can cause issu...
, 2015-07-21, 23:52
[HDFS-7871] NameNodeEditLogRoller can keep printing "Swallowing exception" message
...In one of our customer's cluster, we saw the NameNode kept printing out the following error msg and thus got stuck for several minutes:ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesyst...
, 2015-07-18, 02:45
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