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[HDFS-4915] Add config to ZKFC to disable fencing - HDFS - [issue]
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...With QuorumJournalManager, it's not important for the ZKFCs to perform any fencing. We currently workaround this by setting the fencer to /bin/true, but the ZKFC still does things like creat...
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http://issues.apache.org/jira/browse/HDFS-4915
Author: Todd Lipcon,
2013-06-18, 19:29
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[HDFS-3792] Fix two findbugs introduced by HDFS-3695 - HDFS - [issue]
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...Accidentally introduced two trivial findbugs warnings in HDFS-3695. This JIRA is to fix them....
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http://issues.apache.org/jira/browse/HDFS-3792
Author: Todd Lipcon,
2013-06-13, 23:53
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Re: dfs.datanode.socket.reuse.keepalive - HDFS - [mail # dev]
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...+1 for dropping the client side expiry down to something like 1-2 seconds. I'd rather do that than up the server side, since the server side resource (DN threads) is likely to be more conten...
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Author: Todd Lipcon,
2013-06-10, 17:35
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[HDFS-3447] StandbyException should not be logged at ERROR level on server - HDFS - [issue]
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...Currently, the standby NN will log StandbyExceptions at ERROR level any time a client tries to connect to it. So, if the second NN in an HA pair is active, the first NN will spew a lot of th...
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http://issues.apache.org/jira/browse/HDFS-3447
Author: Todd Lipcon,
2013-06-07, 08:31
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[HDFS-4879] Add "blocked ArrayList" collection to avoid CMS full GCs - HDFS - [issue]
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...We recently saw an issue where a large deletion was issued which caused 25M blocks to be collected during deleteInternal. Currently, the list of collected blocks is an ArrayList, meaning tha...
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http://issues.apache.org/jira/browse/HDFS-4879
Author: Todd Lipcon,
2013-06-07, 01:13
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[HDFS-1172] Blocks in newly completed files are considered under-replicated too quickly - HDFS - [issue]
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...I've seen this for a long time, and imagine it's a known issue, but couldn't find an existing JIRA. It often happens that we see the NN schedule replication on the last block of files very q...
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http://issues.apache.org/jira/browse/HDFS-1172
Author: Todd Lipcon,
2013-06-04, 20:33
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[HDFS-3974] dfsadmin -metasave throws NPE when under-replicated blocks are recently deleted - HDFS - [issue]
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...We currently have the following race: Block is underreplicated, hence it's present in neededReplications User deletes the block - its BlockInfo.blockCollection is set to null Admin runs meta...
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http://issues.apache.org/jira/browse/HDFS-3974
Author: Todd Lipcon,
2013-06-04, 19:23
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[HDFS-4298] StorageRetentionManager spews warnings when used with QJM - HDFS - [issue]
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...When the NN is configured with a QJM, we see the following warning message every time a checkpoint is made or uploaded:12/12/10 16:07:52 WARN namenode.FSEditLog: Unable to determine input st...
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http://issues.apache.org/jira/browse/HDFS-4298
Author: Todd Lipcon,
2013-05-25, 16:11
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[HDFS-3875] Issue handling checksum errors in write pipeline - HDFS - [issue]
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...We saw this issue with one block in a large test cluster. The client is storing the data with replication level 2, and we saw the following: the second node in the pipeline detects a checksu...
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http://issues.apache.org/jira/browse/HDFS-3875
Author: Todd Lipcon,
2013-05-22, 15:07
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[HDFS-4833] Corrupt blocks are not invalidated when first processing repl queues - HDFS - [issue]
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...When the NN processes misreplicated blocks in processMisReplicatedBlock (eg during initial startup when first processing repl queues), it does not invalidate corrupt replicas unless the bloc...
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http://issues.apache.org/jira/browse/HDFS-4833
Author: Todd Lipcon,
2013-05-16, 22:05
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