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[HDFS-8818] Allow Balancer to run faster - HDFS - [issue]
...The original design of Balancer is intentionally to make it run slowly so that the balancing activities won't affect the normal cluster activities and the running jobs.There are new use case...
http://issues.apache.org/jira/browse/HDFS-8818    Author: Tsz Wo Nicholas Sze, 2015-08-11, 17:05
[HDFS-8384] Allow NN to startup if there are files having a lease but are not under construction - HDFS - [issue]
...When there are files having a lease but are not under construction, NN will fail to start up with15/05/12 00:36:31 ERROR namenode.FSImage: Unable to save image for /hadoop/hdfs/namenodejava....
http://issues.apache.org/jira/browse/HDFS-8384    Author: Tsz Wo Nicholas Sze, 2015-08-07, 21:55
[HDFS-3184] Add public HDFS client API - HDFS - [issue]
...There are some useful operations in HDFS but not in the FileSystem API; see a list in Uma's comment.  These operations should be made available to the public....
http://issues.apache.org/jira/browse/HDFS-3184    Author: Tsz Wo Nicholas Sze, 2015-08-06, 06:02
[HDFS-7865] NullPointerException in SimulatedFSDataset - HDFS - [issue]
...https://builds.apache.org/job/PreCommit-HDFS-Build/9690//testReport/org.apache.hadoop.hdfs.server.balancer/TestBalancer/testUnknownDatanode/java.lang.NullPointerException at org.apache.hadoo...
http://issues.apache.org/jira/browse/HDFS-7865    Author: Tsz Wo Nicholas Sze, 2015-08-05, 05:06
[HDFS-6861] Separate Balancer specific logic form Dispatcher - HDFS - [issue]
...In order to balance datanode storage utilization of a cluster, Balancer (1) classifies datanodes into different groups (overUtilized, aboveAvgUtilized, belowAvgUtilized and underUtilized), (...
http://issues.apache.org/jira/browse/HDFS-6861    Author: Tsz Wo Nicholas Sze, 2015-07-28, 02:05
[HDFS-7639] Remove the limitation imposed by dfs.balancer.moverThreads - HDFS - [issue]
...In Balancer/Mover, the number of dispatcher threads (dfs.balancer.moverThreads) limits the number of concurrent moves.  Each dispatcher thread sends request to a datanode and then is bl...
http://issues.apache.org/jira/browse/HDFS-7639    Author: Tsz Wo Nicholas Sze, 2015-07-28, 01:48
[HDFS-8825] Enhancements to Balancer - HDFS - [issue]
...This is an umbrella JIRA to enhance Balancer.  The goal is to make it runs faster, more efficient and improve its usability....
http://issues.apache.org/jira/browse/HDFS-8825    Author: Tsz Wo Nicholas Sze, 2015-07-28, 01:13
[HDFS-7884] NullPointerException in BlockSender - HDFS - [issue]
...java.lang.NullPointerException at org.apache.hadoop.hdfs.server.datanode.BlockSender.<init>(BlockSender.java:264) at org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXc...
http://issues.apache.org/jira/browse/HDFS-7884    Author: Tsz Wo Nicholas Sze, 2015-07-27, 15:43
[HDFS-8433] set blockToken in LocatedStripedBlock - HDFS - [issue]
...The blockToken provided in LocatedStripedBlock is not used to create LocatedBlock in constructInternalBlock and parseStripedBlockGroup in StripedBlockUtil.We should also add ec tests with se...
http://issues.apache.org/jira/browse/HDFS-8433    Author: Tsz Wo Nicholas Sze, 2015-07-20, 03:40
[HDFS-8541] Mover should exit with NO_MOVE_PROGRESS if there is no move progress - HDFS - [issue]
...HDFS-8143 changed Mover to exit after some retry when failed to move blocks.  Two additional suggestions: Mover retry counter should be incremented only if all moves fail.  If ther...
http://issues.apache.org/jira/browse/HDFS-8541    Author: Tsz Wo Nicholas Sze, 2015-07-14, 16:34
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elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB