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[HDFS-4347] TestBackupNode can go into infinite loop "Waiting checkpoint to complete." - HDFS - [issue]
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...waitCheckpointDone() can loop forever if txid to wait for is calculated after startBackupNode()....
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http://issues.apache.org/jira/browse/HDFS-4347
Author: Konstantin Shvachko,
2012-12-29, 14:05
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[HDFS-4308] addBlock() should persist file blocks once - HDFS - [issue]
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...FSNamesystem.getAdditionalBlock() persists all file blocks twice, first in dir.removeBlock() using OP_ADD, then immediately after that in dir.persistBlocks() using OP_UPDATE_BLOCKS.This shou...
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http://issues.apache.org/jira/browse/HDFS-4308
Author: Konstantin Shvachko,
2012-12-29, 14:05
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[HDFS-4231] Introduce HAState for BackupNode - HDFS - [issue]
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...Introduce BNHAState backed up by existing BNHAContext....
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http://issues.apache.org/jira/browse/HDFS-4231
Author: Konstantin Shvachko,
2012-12-03, 14:07
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[HDFS-4179] BackupNode: allow reads, fix checkpointing, safeMode - HDFS - [issue]
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...BackupNode should be allowed to accept read command. Needs some adjustments in checkpointing and with safe mode....
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http://issues.apache.org/jira/browse/HDFS-4179
Author: Konstantin Shvachko,
2012-11-20, 13:21
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[HDFS-2064] Warm HA NameNode going Hot - HDFS - [issue]
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...This is the design for automatic hot HA for HDFS NameNode. It involves use of HA software and LoadReplicator - external to Hadoop components, which substantially simplify the architecture by...
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http://issues.apache.org/jira/browse/HDFS-2064
Author: Konstantin Shvachko,
2012-11-12, 20:16
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[HDFS-2285] BackupNode should reject requests trying to modify namespace - HDFS - [issue]
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...I am trying to remove file from BackupNode usinghadoop fs -fs hdfs://backup.node.com:50100 -rm /README.txtwhich is supposed to fail. But it seems to be hanging forever.Needs some investigati...
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http://issues.apache.org/jira/browse/HDFS-2285
Author: Konstantin Shvachko,
2012-09-07, 22:02
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[HDFS-708] A stress-test tool for HDFS. - HDFS - [issue]
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...It would be good to have a tool for automatic stress testing HDFS, which would provide IO-intensive load on HDFS cluster.The idea is to start the tool, let it run overnight, and then be able...
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http://issues.apache.org/jira/browse/HDFS-708
Author: Konstantin Shvachko,
2012-08-01, 08:00
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[HDFS-3368] Missing blocks due to bad DataNodes coming up and down. - HDFS - [issue]
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...All replicas of a block can be removed if bad DataNodes come up and down during cluster restart resulting in data loss....
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http://issues.apache.org/jira/browse/HDFS-3368
Author: Konstantin Shvachko,
2012-07-19, 22:13
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Re: Changing where HDFS stores its data - HDFS - [mail # user]
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...In hdfs-site.xml you should specify dfs.namenode.name.dir for NameNode stoareg directories or / and dfs.datanode.data.dir for DataNode storage Changing temporary directory location cha...
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Author: Konstantin Shvachko,
2012-06-19, 00:12
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[HDFS-1107] Turn on append by default. - HDFS - [issue]
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...hdfs-default.xml still has the old default value dfs.support.append = false. It should be changed to true, or removed from the default configuration and treated as true if not found....
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http://issues.apache.org/jira/browse/HDFS-1107
Author: Konstantin Shvachko,
2012-06-17, 12:13
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