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[HDFS-7992] HTTP request queue size limit can be made configurable - HDFS - [issue]
...The queue size for httpserver is hardcoded as 128 in   public static Connector createDefaultChannelConnector() {    SelectChannelConnector ret = new SelectChannelCon...
http://issues.apache.org/jira/browse/HDFS-7992    Author: J.Andreina, 2015-03-26, 03:35
[HDFS-3325] When configuring "dfs.namenode.safemode.threshold-pct" to a value greater or equal to 1 there is mismatch in the UI report - HDFS - [issue]
...When dfs.namenode.safemode.threshold-pct is configured to nNamenode will be in safemode until n percentage of blocks that should satisfy     the minimal replication requiremen...
http://issues.apache.org/jira/browse/HDFS-3325    Author: J.Andreina, 2015-03-24, 02:47
[HDFS-7867] Update action param from "start" to "prepare" in rolling upgrade javadoc - HDFS - [issue]
...In the following  code comment rolling upgrade action "start" should be updated to "prepare"DistributedFileSystem.java : /**   * Rolling upgrade: start/finalize/query.&nb...
http://issues.apache.org/jira/browse/HDFS-7867    Author: J.Andreina, 2015-03-19, 15:23
[HDFS-7869] Inconsistency in the return information while performing rolling upgrade - HDFS - [issue]
...Return information , while performing "finalize Rolling upgrade" is improper ( does not gives information whether the current action is successful / not)Rex@XXXXXXXXXXX:~/Hadoop_27/hadoop-3....
http://issues.apache.org/jira/browse/HDFS-7869    Author: J.Andreina, 2015-03-19, 15:23
[HDFS-7934] During Rolling upgrade rollback ,standby namenode startup fails. - HDFS - [issue]
...During Rolling upgrade rollback , standby namenode startup fails , while loading edits and when  there is no local copy of edits created after upgrade ( which is already been removed &n...
http://issues.apache.org/jira/browse/HDFS-7934    Author: J.Andreina, 2015-03-18, 16:15
[HDFS-7952] On starting Standby with "rollback" option, lastPromisedEpoch gets updated and Active Namenode is shutting down. - HDFS - [issue]
...Step 1: Start NN1 as active , NN2 as standby .Step 2: Perform "hdfs dfsadmin -rollingUpgrade prepare"Step 3: Start NN2 active and NN1 as standby with rolling upgrade started option.Step 4: D...
http://issues.apache.org/jira/browse/HDFS-7952    Author: J.Andreina, 2015-03-18, 12:33
[HDFS-7939] Two fsimage_rollback_* files are created which are not deleted after rollback. - HDFS - [issue]
...During checkpoint , if any failure in uploading to the remote Namenode  then restarting Namenode with "rollingUpgrade started" option creates 2 fsimage_rollback_* at Active Namenode .On...
http://issues.apache.org/jira/browse/HDFS-7939    Author: J.Andreina, 2015-03-17, 10:26
[HDFS-2831] Description of dfs.namenode.name.dir should be changed - HDFS - [issue]
...<property>  <name>dfs.namenode.name.dir</name>  <value>file://${hadoop.tmp.dir}/dfs/name</value>  <description>Determines wh...
http://issues.apache.org/jira/browse/HDFS-2831    Author: J.Andreina, 2015-03-16, 19:50
[HDFS-7874] Even-though rollback image is created, after restarting namenode with  "rollingUpgrade started" option , createdRollbackImages is set to false. - HDFS - [issue]
...Step 1: Prepare rolling upgrade using "hdfs dfsadmin -rollingUpgrade prepare" . Rollback image will be created and UI displays as followsRolling upgrade started at 3/3/2015, 11:47:03 AM. Rol...
http://issues.apache.org/jira/browse/HDFS-7874    Author: J.Andreina, 2015-03-16, 04:58
[HDFS-7820] Client Write fails after rolling upgrade rollback with "<block_id> already exist in finalized state" - HDFS - [issue]
...Steps to Reproduce:===================Step 1:  Prepare rolling upgrade using "hdfs dfsadmin -rollingUpgrade prepare"Step 2:  Shutdown SNN and NNStep 3:  Start NN with the "hdf...
http://issues.apache.org/jira/browse/HDFS-7820    Author: J.Andreina, 2015-03-12, 06:06
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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