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[HDFS-3215] Block size is logging as zero Even blockrecevied command received by DN - HDFS - [issue]
...Scenario 1==========Start NN and DN.write file.Block size is logging as zero Even blockrecevied command received by DN  NN log2012-03-14 20:23:40,541 INFO org.apache.hadoop.hdfs.StateCh...
http://issues.apache.org/jira/browse/HDFS-3215    Author: Brahma Reddy Battula, 2013-11-20, 06:37
[HDFS-5315] [HDFS-Snapshot] Return code of SnapshotDiff of two invalid snapshots is 0 - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-5315    Author: Brahma Reddy Battula, 2013-10-21, 02:35
[HDFS-3618] SSH fencing option may incorrectly succeed if nc (netcat) command not present - HDFS - [issue]
...Started NN's and zkfc's in Suse11.Suse11 will have netcat installation and netcat -z will work(but nc -z wn't work)..While executing following command, got command not found hence rc will be...
http://issues.apache.org/jira/browse/HDFS-3618    Author: Brahma Reddy Battula, 2013-08-14, 10:19
[HDFS-2906] NullPointerExeception in BlockReceiver on DataNode restart. - HDFS - [issue]
...Scenario:1) Start the cluster with one NN and two DN's.2) Keep restart one DN for every 10mins.3) Let's keep the clients to write the data continuosly.Observed below trace.2012-02-07 01:03:4...
http://issues.apache.org/jira/browse/HDFS-2906    Author: Brahma Reddy Battula, 2013-07-26, 06:15
[HDFS-3436] adding new datanode to existing  pipeline fails in case of Append/Recovery - HDFS - [issue]
...Scenario:=========1. Cluster with 4 DataNodes.2. Written file to 3 DNs, DN1->DN2->DN33. Stopped DN3,Now Append to file is failing due to addDatanode2ExistingPipeline is failed. CL...
http://issues.apache.org/jira/browse/HDFS-3436    Author: Brahma Reddy Battula, 2013-05-07, 13:40
RE: Put a file to Hadoop with WebHDFS ? - HDFS - [mail # user]
... you need to give the datanode http port,Like below   curl -i -X PUT -T /home/levi/3 "http://localhost:50075/webhdfs/v1/levi/3?op=CREATE"   Syntax for writing file using webhd...
   Author: Brahma Reddy Battula, 2013-03-20, 04:00
[HDFS-3384] DataStreamer thread should be closed immediatly when failed to setup a PipelineForAppendOrRecovery - HDFS - [issue]
...Scenraio:=========write a filecorrupt block manuallycall append..2012-04-19 09:33:10,776 INFO  hdfs.DFSClient (DFSOutputStream.java:createBlockOutputStream(1059)) - Exception in createB...
http://issues.apache.org/jira/browse/HDFS-3384    Author: Brahma Reddy Battula, 2013-03-13, 05:07
RE: How to get Under-replicated blocks information [Location] - HDFS - [mail # user]
...you get the block locations(hoping that you are asking about which node) by two ways..  i) ./hadoop fsck / -files -blocks -locations.(Commandline) ii) NameNode UI..(GO to UI and click o...
   Author: Brahma Reddy Battula, 2013-02-27, 10:33
[HDFS-3980] NPE in HttpURLConnection.java while starting SecondaryNameNode. - HDFS - [issue]
...Scenario:========I started secure cluster by going thru following..https://ccp.cloudera.com/display/CDHDOC/CDH3+Security+Guide..Here SecondaryNamenode is getting shutdown by throwing NPE..Pl...
http://issues.apache.org/jira/browse/HDFS-3980    Author: Brahma Reddy Battula, 2012-10-30, 07:12
[HDFS-3108] [UI] Few Namenode links are not working - HDFS - [issue]
...Scenario 1==========Once tail a file from UI and click on "Go Back to File View",I am getting HTTP ERROR 404Scenario 2===========Frequently I am getting following execption If a click on (Br...
http://issues.apache.org/jira/browse/HDFS-3108    Author: Brahma Reddy Battula, 2012-09-26, 20:14
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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