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[HDFS-4268] Remove redundant enum NNHAStatusHeartbeat.State - HDFS - [issue]
...NNHAStatusHeartbeat.State is redundant and can be replaced with commonly used enum HAServiceState.We should also consistently use HAServiceState to check if the state is ACTIVE or STANDBY ra...
http://issues.apache.org/jira/browse/HDFS-4268    Author: Konstantin Shvachko, 2013-02-15, 05:06
[HDFS-2452] OutOfMemoryError in DataXceiverServer takes down the DataNode - HDFS - [issue]
...OutOfMemoryError brings down DataNode, when DataXceiverServer tries to spawn a new data transfer thread....
http://issues.apache.org/jira/browse/HDFS-2452    Author: Konstantin Shvachko, 2013-02-06, 21:46
[HDFS-4452] getAdditionalBlock() can create multiple blocks if the client times out and retries. - HDFS - [issue]
...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...
http://issues.apache.org/jira/browse/HDFS-4452    Author: Konstantin Shvachko, 2013-02-02, 14:04
[HDFS-4349] Test reading files from BackupNode - HDFS - [issue]
...Add a test that ensures files are readable both from NameNode and BackupNode....
http://issues.apache.org/jira/browse/HDFS-4349    Author: Konstantin Shvachko, 2013-01-01, 14:05
[HDFS-4347] TestBackupNode can go into infinite loop "Waiting checkpoint to complete." - HDFS - [issue]
...waitCheckpointDone() can loop forever if txid to wait for is calculated after startBackupNode()....
http://issues.apache.org/jira/browse/HDFS-4347    Author: Konstantin Shvachko, 2012-12-29, 14:05
[HDFS-4308] addBlock() should persist file blocks once - HDFS - [issue]
...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...
http://issues.apache.org/jira/browse/HDFS-4308    Author: Konstantin Shvachko, 2012-12-29, 14:05
[HDFS-4231] Introduce HAState for BackupNode - HDFS - [issue]
...Introduce BNHAState backed up by existing BNHAContext....
http://issues.apache.org/jira/browse/HDFS-4231    Author: Konstantin Shvachko, 2012-12-03, 14:07
[HDFS-4179] BackupNode: allow reads, fix checkpointing, safeMode - HDFS - [issue]
...BackupNode should be allowed to accept read command. Needs some adjustments in checkpointing and with safe mode....
http://issues.apache.org/jira/browse/HDFS-4179    Author: Konstantin Shvachko, 2012-11-20, 13:21
[HDFS-2285] BackupNode should reject requests trying to modify namespace - HDFS - [issue]
...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...
http://issues.apache.org/jira/browse/HDFS-2285    Author: Konstantin Shvachko, 2012-09-07, 22:02
[HDFS-708] A stress-test tool for HDFS. - HDFS - [issue]
...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...
http://issues.apache.org/jira/browse/HDFS-708    Author: Konstantin Shvachko, 2012-08-01, 08:00
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