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[HDFS-7527] TestDecommission.testIncludeByRegistrationName fails occassionally in trunk - HDFS - [issue]
...https://builds.apache.org/job/Hadoop-Hdfs-trunk/1974/testReport/Error Messagetest timed out after 360000 millisecondsStacktracejava.lang.Exception: test timed out after 360000 milliseconds a...
http://issues.apache.org/jira/browse/HDFS-7527    Author: Yongjun Zhang, 2014-12-18, 05:43
[HDFS-6403] Add metrics for log warnings reported by JVM pauses - HDFS - [issue]
...HADOOP-9618 logs warnings when there are long GC pauses. If this is exposed as a metric, then they can be monitored....
http://issues.apache.org/jira/browse/HDFS-6403    Author: Yongjun Zhang, 2014-12-17, 19:50
[HDFS-7525] TestDatanodeManager.testNumVersionsReportedCorrect fails occassionally in trunk - HDFS - [issue]
...https://builds.apache.org/job/Hadoop-Hdfs-trunk/1974/testReport/Error MessageThe map of version counts returned by DatanodeManager was not what it was expected to be on iteration 484 expecte...
http://issues.apache.org/jira/browse/HDFS-7525    Author: Yongjun Zhang, 2014-12-16, 07:58
[HDFS-7524] TestRetryCacheWithHA.testUpdatePipeline fails occasionally in trunk - HDFS - [issue]
...https://builds.apache.org/job/Hadoop-Hdfs-trunk/1974/testReport/Error MessageAfter waiting the operation updatePipeline still has not taken effect on NN yetStacktracejava.lang.AssertionError...
http://issues.apache.org/jira/browse/HDFS-7524    Author: Yongjun Zhang, 2014-12-15, 17:23
[HDFS-7497] Inconsistent report of decommissioning DataNodes between dfsadmin and NameNode webui - HDFS - [issue]
...It's observed that dfsadmin report list DNs in the decomm state while NN UI list DNs in dead state.I found what happens is:NN webui uses two steps to get the result: first collect a list of ...
http://issues.apache.org/jira/browse/HDFS-7497    Author: Yongjun Zhang, 2014-12-12, 15:30
[HDFS-7458] Add description to the nfs ports in core-site.xml used by nfs test to avoid confusion - HDFS - [issue]
...HDFS-5246 changed the default setting of nfs ports for testing, so the default setting for testing is different than for production. This may cause confusion.Creating this jira to add some d...
http://issues.apache.org/jira/browse/HDFS-7458    Author: Yongjun Zhang, 2014-12-03, 21:51
[HDFS-6788] Improve synchronization in BPOfferService with read write lock - HDFS - [issue]
...Threads in DN (DataXceiver, PacketResponder, Async disk worker etc) may block at BPOfferService.getBlockPoolId() when calling BPOfferService.checkBlock(), though they are just reading the sa...
http://issues.apache.org/jira/browse/HDFS-6788    Author: Yongjun Zhang, 2014-12-01, 03:11
[HDFS-6694] TestPipelinesFailover.testPipelineRecoveryStress tests fail intermittently with various symptoms - HDFS - [issue]
...TestPipelinesFailover.testPipelineRecoveryStress tests fail intermittently with various symptoms. Typical failures are described in first comment....
http://issues.apache.org/jira/browse/HDFS-6694    Author: Yongjun Zhang, 2014-12-01, 02:35
[HDFS-7403] Inaccurate javadoc of  BlockUCState#COMPLETE state - HDFS - [issue]
...The current javadoc says  /**   * States, which a block can go through while it is under construction.   */  static public enum BlockUCState {   ...
http://issues.apache.org/jira/browse/HDFS-7403    Author: Yongjun Zhang, 2014-11-24, 15:40
[HDFS-7146] NFS ID/Group lookup requires SSSD enumeration on the server - HDFS - [issue]
...The current implementation of the NFS UID and GID lookup works by running 'getent passwd' with an assumption that it will return the entire list of users available on the OS, local and remot...
http://issues.apache.org/jira/browse/HDFS-7146    Author: Yongjun Zhang, 2014-11-18, 15:29
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NEW: Monitor These Apps!
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