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[HDFS-8110] Remove unsupported 'hdfs namenode -rollingUpgrade downgrade' from document - HDFS - [issue]
...Support for "-rollingUpgrade downgrade" is been removed as part of HDFS-7302.Corresponding information should be removed from document also.Downgrade with DowntimeAdministrator may choose to...
http://issues.apache.org/jira/browse/HDFS-8110    Author: J.Andreina, 2015-04-25, 12:35
[HDFS-8184] Illegal Option is displayed while executing clrSpaceQuota with -storageType option - HDFS - [issue]
...Providing "-storageType" during execution of clrSpaceQuota  as per the usage , displays "Illegal option"XXXXXXXXXXXXXXXXX:~/opensrc/hadoop-3.0.0-SNAPSHOT/bin> ./hdfs dfsadmin -setSpa...
http://issues.apache.org/jira/browse/HDFS-8184    Author: J.Andreina, 2015-04-24, 08:05
[HDFS-7934] Update RollingUpgrade rollback documentation: should use bootstrapstandby for standby NN - 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, 2015-04-16, 16:36
[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, 2015-04-15, 21:23
[HDFS-7842] Blocks missed while performing downgrade immediately after rolling back the cluster. - HDFS - [issue]
...Performing downgrade immediately after rolling back the cluster , will replace the blocks from trash Since the block id for the files created before rollback will be same as the file created...
http://issues.apache.org/jira/browse/HDFS-7842    Author: J.Andreina, 2015-04-14, 07:46
[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, 2015-04-10, 16:38
[HDFS-6805] NPE is thrown at Namenode , for every block report sent from DN - HDFS - [issue]
...Env Details :HA Cluster2 DN Procedure :===========During Client operation is in progress restarted one DN .After restart for every block report NPE is thrown at Namenode and DN side.Namenode...
http://issues.apache.org/jira/browse/HDFS-6805    Author: J.Andreina, 2015-03-31, 04:13
[HDFS-7890] Improve information on Top users for metrics in RollingWindowsManager and lower log level - HDFS - [issue]
...Information on Top users for metrics in RollingWindowsManager should be improved and can be moved to DEBUG.Currently it is INFO logs at namenode side and does not provide much information. 1...
http://issues.apache.org/jira/browse/HDFS-7890    Author: J.Andreina, 2015-03-30, 15:52
[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
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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