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[HDFS-3457] Number of UnderReplicated blocks displayed in UI and Fsck report is different - HDFS - [issue]
...Scenario:=========Write an HDFS application with the following sequence of operations1. Create file.2. Append and sync file.3. Delete file.4. Create file.5. Rename file.Run the application u...
http://issues.apache.org/jira/browse/HDFS-3457    Author: J.Andreina, 2012-05-30, 04:30
[HDFS-3356] When dfs.block.size is configured to 0 the block which is created in rbw is never deleted - HDFS - [issue]
...dfs.block.size=0step 1: start NN and DNstep 2: write a file "a.txt"The block is created in rbw and since the blocksize is 0 write fails and the file is not closed. DN sents in the block repo...
http://issues.apache.org/jira/browse/HDFS-3356    Author: J.Andreina, 2012-05-23, 20:24
[HDFS-3407] When "dfs.datanode.directoryscan.interval" is configured to 0 DN get shutdown but when configured to -1/ less than 0 values directory scan is disabled - HDFS - [issue]
...Scenario 1:===========•configure "dfs.datanode.directoryscan.interval"= -1•start NN and DNDirectory scan will be disabled if we configure a value less than zero. write will be successful and...
http://issues.apache.org/jira/browse/HDFS-3407    Author: J.Andreina, 2012-05-23, 20:24
[HDFS-3406] Secondary Namenode does not do checkpointing and Exception message is thrown for ever when "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir" are configured to an invalid value - HDFS - [issue]
...When "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir" are configured to an invalid value.Started NN,DN and SNNAt the SNN side checkpoint does not happens and exception i...
http://issues.apache.org/jira/browse/HDFS-3406    Author: J.Andreina, 2012-05-23, 20:24
[HDFS-3360] SNN gets Shutdown if the conf "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir" is configured to more than 6 comma seperated values with 3-4 level in each directories - HDFS - [issue]
...Configured "dfs.namenode.checkpoint.dir" and "dfs.namenode.checkpoint.edits.dir" to more than 6 comma seperated directories  Started NN,DN,SNN Secondary Namenode gets shutdown with...
http://issues.apache.org/jira/browse/HDFS-3360    Author: J.Andreina, 2012-05-11, 19:10
[HDFS-3286] When the threshold value for balancer is 0(zero) ,unexpected output is displayed - HDFS - [issue]
...Replication factor =1Step 1: Start NN,DN1.write 4 GB of dataStep 2: Start DN2Step 3: issue the balancer command(./hdfs balancer -threshold 0)The threshold parameter is a fraction in the rang...
http://issues.apache.org/jira/browse/HDFS-3286    Author: J.Andreina, 2012-05-01, 14:03
[HDFS-3326] Append enabled log message uses the wrong variable - HDFS - [issue]
..."dfs.support.append" is set to truestarted NN in non-HA modeAt the NN side log the append enable is set to false.This is because in code append enabled is set to HA enabled value.Since Start...
http://issues.apache.org/jira/browse/HDFS-3326    Author: J.Andreina, 2012-04-28, 14:03
[HDFS-3320] When dfs.namenode.safemode.min.datanodes is configured there is a mismatch in UI report - HDFS - [issue]
...Scenario 1:step 1: dfs.namenode.safemode.min.datanodes =2 in hdfs-site.xmlstep 2: start NNSince the datanode threshold is 2 until 2 DN is up NN will not come out of safemode.•But in UI repor...
http://issues.apache.org/jira/browse/HDFS-3320    Author: J.Andreina, 2012-04-25, 14:32
[HDFS-2932] Under replicated block after the pipeline recovery. - HDFS - [issue]
...Started 1NN,DN1,DN2,DN3 in the same machine.Written a huge file of size 2 Gbwhile the write for the block-id-1005 is in progress bruought down DN3.after the pipeline recovery happened.Block ...
http://issues.apache.org/jira/browse/HDFS-2932    Author: J.Andreina, 2012-03-22, 03:19
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