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[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
[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-3600] DataNode is not responding After throwing java.lang.OutOfMemoryError: Direct buffer memory - HDFS - [issue]
...Scenario:=========Started NN with four DN'swritten client program such that it will keep on write,append and read dta with 10 thread.After 4 hours ,got OOME.Then DN listed under Dead it's no...
http://issues.apache.org/jira/browse/HDFS-3600    Author: Brahma Reddy Battula, 2012-08-28, 03:40
[HDFS-3586] Blocks are not getting replicate even DN's are availble. - HDFS - [issue]
...Scenario:=========Started four DN's(Say DN1,DN2,DN3 and DN4)writing files with RF=3..formed pipeline with DN1->DN2->DN3.Since DN3 network is very slow.it's not able to send acks.Again ...
http://issues.apache.org/jira/browse/HDFS-3586    Author: Brahma Reddy Battula, 2012-08-14, 13:12
[HDFS-3526] Standy NameNode is entering into Safemode even after HDFS-2914 due to resources low - HDFS - [issue]
...Scenario:=========Start ANN SNN with One DNMake 100% disk full for SNNNow restart SNN..Here SNN is going safemode..But it shouldnot happen according to HDFS-2914...
http://issues.apache.org/jira/browse/HDFS-3526    Author: Brahma Reddy Battula, 2012-07-26, 06:41
[HDFS-3605] Block mistakenly marked corrupt during edit log catchup phase of failover - HDFS - [issue]
...Open file for appendWrite data and sync.After next log roll and editlog tailing in standbyNN close the append stream.Call append multiple times on the same file, before next editlog roll.Now...
http://issues.apache.org/jira/browse/HDFS-3605    Author: Brahma Reddy Battula, 2012-07-19, 14:02
[HDFS-3584] Blocks are getting marked as corrupt with append operation under high load. - HDFS - [issue]
...Scenario:========= 1. There are 2 clients cli1 and cli2 cli1 write a file F1 and not closed2. The cli2 will call append on unclosed file and triggers a leaserecovery3. Cli1 is closed4. Lease...
http://issues.apache.org/jira/browse/HDFS-3584    Author: Brahma Reddy Battula, 2012-07-11, 18:12
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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