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[HDFS-4224] The dncp_block_verification log can be compressed - HDFS - [issue]
...On some systems, I noticed that when the scanner runs, the dncp_block_verification.log.curr file under the block pool gets quite large (several GBs). Although this is rolled away, we could a...
http://issues.apache.org/jira/browse/HDFS-4224    Author: Harsh J, 2013-05-23, 18:02
[HDFS-1804] Add a new block-volume device choosing policy that looks at free space - HDFS - [issue]
...HDFS-1120 introduced pluggable block-volume choosing policies, but still carries the vanilla RoundRobin as its default.An additional implementation that also takes into consideration the fre...
http://issues.apache.org/jira/browse/HDFS-1804    Author: Harsh J, 2013-05-17, 00:30
[HDFS-3628] The dfsadmin -setBalancerBandwidth command on branch-1 does not check for superuser privileges - HDFS - [issue]
...The changes from HDFS-2202 for 0.20.x/1.x failed to add in a checkSuperuserPrivilege();, and hence any user (not admins alone) can reset the balancer bandwidth across the cluster if they wis...
http://issues.apache.org/jira/browse/HDFS-3628    Author: Harsh J, 2013-05-15, 06:16
[HDFS-4255] Useless stacktrace shown in DN when there's an error writing a block - HDFS - [issue]
...The DN sometimes carries these, especially when its asked to shutdown and there's ongoing write activity. The stacktrace is absolutely useless and may be improved, and the message it comes a...
http://issues.apache.org/jira/browse/HDFS-4255    Author: Harsh J, 2013-04-13, 04:48
[HDFS-4246] The exclude node list should be more forgiving, for each output stream - HDFS - [issue]
...Originally observed by Inder on the mailing lists:Folks,i was wondering if there is any mechanism/logic to move a node back from the excludedNodeList to live nodes to be tried for new block ...
http://issues.apache.org/jira/browse/HDFS-4246    Author: Harsh J, 2013-03-25, 19:36
[HDFS-2541] For a sufficiently large value of blocks, the DN Scanner may request a random number with a negative seed value. - HDFS - [issue]
...Running off 0.20-security, I noticed that one could get the following exception when scanners are used:DataXceiver java.lang.IllegalArgumentException: n must be positive at java.util.Random....
http://issues.apache.org/jira/browse/HDFS-2541    Author: Harsh J, 2013-03-19, 17:59
[HDFS-4509] Provide a way to ask Balancer to exclude certain DataNodes in its computation and/or work. - HDFS - [issue]
...This comes particularly useful in clusters that have a split between DNs used for regular purpose and DNs used for HBase RSes specifically. By asking the balancer to exclude the DNs that RSe...
http://issues.apache.org/jira/browse/HDFS-4509    Author: Harsh J, 2013-02-28, 17:41
[HDFS-4508] Two minor improvements to the QJM Deployment docs - HDFS - [issue]
...Suggested by ML user Azurry, the docs at http://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/HDFSHighAvailabilityWithQJM.html#Deployment_details can be improved for two specif...
http://issues.apache.org/jira/browse/HDFS-4508    Author: Harsh J, 2013-02-21, 13:47
[HDFS-4277] SocketTimeoutExceptions over the DataXciever service of a DN should print the DFSClient ID - HDFS - [issue]
...Currently, when one faces a SocketTimeoutExceptions (or any exception rather, in a DN log, for a client <-> DN interaction), we fail to print the DFSClient ID. This makes it untraceabl...
http://issues.apache.org/jira/browse/HDFS-4277    Author: Harsh J, 2013-02-07, 00:05
[HDFS-4259] Improve pipeline DN replacement failure message - HDFS - [issue]
...The current message shown is something such as below:Failed to add a datanode. User may turn off this feature by setting X.policy in configuration, where the current policy is Y. (Nodes: cur...
http://issues.apache.org/jira/browse/HDFS-4259    Author: Harsh J, 2013-01-28, 13:21
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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