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[HDFS-2452] OutOfMemoryError in DataXceiverServer takes down the DataNode - HDFS - [issue]
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...OutOfMemoryError brings down DataNode, when DataXceiverServer tries to spawn a new data transfer thread....
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http://issues.apache.org/jira/browse/HDFS-2452
Author: Konstantin Shvachko,
2013-02-06, 21:46
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[HDFS-4452] getAdditionalBlock() can create multiple blocks if the client times out and retries. - HDFS - [issue]
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...HDFS client tries to addBlock() to a file. If NameNode is busy the client can timeout and will reissue the same request again. The two requests will race with each other in FSNamesystem.getA...
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http://issues.apache.org/jira/browse/HDFS-4452
Author: Konstantin Shvachko,
2013-02-02, 14:04
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[HDFS-4349] Test reading files from BackupNode - HDFS - [issue]
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...Add a test that ensures files are readable both from NameNode and BackupNode....
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http://issues.apache.org/jira/browse/HDFS-4349
Author: Konstantin Shvachko,
2013-01-01, 14:05
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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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