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[HBASE-9539] Handle post namespace snapshot files  when checking for HFile V1 - HBase - [issue]
...When checking for HFileV1 before upgrading to 96, the snapshot file links tries to read from post-namespace locations. The migration script needs to be run on 94 cluster, and it requires rea...
http://issues.apache.org/jira/browse/HBASE-9539    Author: Himanshu Vashishtha, 2013-09-17, 13:15
Re: 0.95.2 upgrade errors - HBase - [mail # user]
..."13/09/16 02:13:39 WARN wal.HLogSplitter: Could not open hdfs://ssp-master:8020/apps/hbase/data/WALs/ssp-region3, 60020,1379105062356-splitting/ssp-region3%2C60020% 2C1379105062356.137910506...
   Author: Himanshu Vashishtha, 2013-09-16, 17:22
[HBASE-9497] Old .META. .tableinfo file kills HMaster - HBase - [issue]
...In pre-0.96, .META. has .tableinfo files which refer to .META. On startup, master tries to read it and aborts since the table name has changed. The .META. .tableinfo files are not being crea...
http://issues.apache.org/jira/browse/HBASE-9497    Author: Himanshu Vashishtha, 2013-09-12, 01:21
[HBASE-9122] NPE in MasterMonitorCallable.close() - HBase - [issue]
...Found this npe while running Integration test suite:Caused by: java.lang.NullPointerException at org.apache.hadoop.hbase.client.HBaseAdmin$MasterMonitorCallable.close(HBaseAdmin.java:2691) a...
http://issues.apache.org/jira/browse/HBASE-9122    Author: Himanshu Vashishtha, 2013-09-11, 00:56
[HBASE-8911] Inject MTTR specific traces to get a break up of various steps - HBase - [issue]
...There are various steps involved in a regionserver recovery process. This jira adds instrumentation at various places in order to get an idea what are the steps involved in a regionserver re...
http://issues.apache.org/jira/browse/HBASE-8911    Author: Himanshu Vashishtha, 2013-09-06, 21:25
Re: Region server blocked at waitForAckedSeqno - HBase - [mail # dev]
...Looking at the jstack, log roller and log syncer, both are blocked to get the sequence number: {code} "regionserver60020.logRoller" daemon prio=10 tid=0x00007f317007f800 nid=0x27ee6 in Objec...
   Author: Himanshu Vashishtha, 2013-09-04, 02:49
[HBASE-9278] Reading Pre-namespace meta table edits kills the reader - HBase - [issue]
...In upgrading to 0.96, there might be some meta/root table edits. Currently, we are just killing SplitLogWorker thread in case it sees any META, or ROOT waledit, which blocks log splitting/re...
http://issues.apache.org/jira/browse/HBASE-9278    Author: Himanshu Vashishtha, 2013-08-31, 06:47
[HBASE-9110] Meta region edits not recovered while migrating to 0.96.0 - HBase - [issue]
...I was doing the migration testing from 0.94.11-snapshot to 0.95.0, and faced this issue.1) Do some edits in meta table (for eg, create a table).2) Kill the cluster.(I used kill because we wo...
http://issues.apache.org/jira/browse/HBASE-9110    Author: Himanshu Vashishtha, 2013-08-29, 14:07
[HBASE-8414] Hbck still refers to -ROOT- table to locate .META. - HBase - [issue]
...In the current ROOT-less trunk, hbck still tries to fix meta by looking its location in the .ROOT. table. This happens if there is no .META. assigned when hbck is ran.HbaseFsck.java:boolean ...
http://issues.apache.org/jira/browse/HBASE-8414    Author: Himanshu Vashishtha, 2013-08-29, 06:50
[HBASE-9297] Fix HFileV1Detector tool post HBASE-9126 - HBase - [issue]
...We need to detect any HFileV1 before upgrading to 0.96. The code to read HFileV1 version is removed in HBASE-9126. It breaks HFileV1Detector tool....
http://issues.apache.org/jira/browse/HBASE-9297    Author: Himanshu Vashishtha, 2013-08-29, 06:49
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