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https://issues.apache.org/jira/browse/HBASE-19331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16262931#comment-16262931
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Shamith kumar commented on HBASE-19331:
---------------------------------------
[~anoop.hbase] If you could guide me to the branch and module of the source
code, I can try.
> Region start-key/end-key corruption in Hbase meta table
> -------------------------------------------------------
>
> Key: HBASE-19331
> URL: https://issues.apache.org/jira/browse/HBASE-19331
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Affects Versions: 0.98.8
> Environment: Reproduced on HBase 0.98.8 on hadoop-2
> Reporter: Shamith kumar
>
> when a region split happens on a key with trailing byte equals zero, the end
> key of the first resulting region and and start key of the second resulting
> region in meta table gets corrupted.
> Here is the link to code to reproduce this issue
> https://bitbucket.org/flytxt/hbase-meta-corruption-test
>
> *+Test Result+*
> [INFO] -------------------------------------------------------
> [INFO] T E S T S
> [INFO] -------------------------------------------------------
> [INFO] Running com.flytxt.HbaseRegionMetaTest
> log4j:WARN No appenders could be found for logger
> (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
> log4j:WARN Please initialize the log4j system properly.
> log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
> info.
> 18:23:54.346 [main] INFO com.flytxt.HbaseRegionMetaTest - Dropping table
> SAMPLE_TBL_1
> 18:23:56.094 [main] INFO com.flytxt.HbaseRegionMetaTest - Dropping table
> SAMPLE_TBL_2
> 18:23:58.107 [main] INFO com.flytxt.HbaseRegionMetaTest - Creating new table
> SAMPLE_TBL_1
> 18:23:58.658 [main] INFO com.flytxt.HbaseRegionMetaTest - Creating new table
> SAMPLE_TBL_1
> 18:23:59.212 [main] INFO com.flytxt.HbaseRegionMetaTest - Starting puts to
> table SAMPLE_TBL_1
> 18:24:00.046 [main] INFO com.flytxt.HbaseRegionMetaTest - Puts complete ..
> lets split SAMPLE_TBL_1
> 18:24:00.500 [main] INFO com.flytxt.HbaseRegionMetaTest - Starting puts to
> table SAMPLE_TBL_2
> 18:24:02.073 [main] INFO com.flytxt.HbaseRegionMetaTest - Puts complete ..
> lets split SAMPLE_TBL_2
> 18:24:02.753 [main] INFO com.flytxt.HbaseRegionMetaTest - region split
> complete .. Lets verify region infos for table SAMPLE_TBL_1
> 18:24:02.754 [main] INFO com.flytxt.HbaseRegionMetaTest -
> ===========================================================
> 18:24:02.754 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Name :
> SAMPLE_TBL_1,,1511355240515.56c8fd8e42228c3c1ec71f9a4da65f5f.
> 18:24:02.755 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Id
> :1511355240515
> 18:24:02.755 [main] INFO com.flytxt.HbaseRegionMetaTest - Region start key
> :[] , Key length :0
> 18:24:02.755 [main] INFO com.flytxt.HbaseRegionMetaTest - Region end key :
> [0, 0, 0, 0, 0, 19, -76] , Key length :7
> 18:24:02.755 [main] INFO com.flytxt.HbaseRegionMetaTest -
> -----------------------------------------------------------
> 18:24:02.762 [main] INFO com.flytxt.HbaseRegionMetaTest -
> ===========================================================
> 18:24:02.762 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Name :
> SAMPLE_TBL_1,\x00\x00\x00\x00\x00\x13\xB4,1511355240515.c06afed17b2a5c4fb54bacf704dd8a9e.
> 18:24:02.762 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Id
> :1511355240515
> 18:24:02.762 [main] INFO com.flytxt.HbaseRegionMetaTest - Region start key
> :[0, 0, 0, 0, 0, 19, -76] , Key length :7
> 18:24:02.763 [main] INFO com.flytxt.HbaseRegionMetaTest - Region end key : []
> , Key length :0
> 18:24:02.763 [main] INFO com.flytxt.HbaseRegionMetaTest -
> -----------------------------------------------------------
> 18:24:03.005 [main] INFO com.flytxt.HbaseRegionMetaTest - region split
> complete .. Lets verify region infos for table SAMPLE_TBL_2
> 18:24:03.006 [main] INFO com.flytxt.HbaseRegionMetaTest -
> ===========================================================
> 18:24:03.006 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Name :
> SAMPLE_TBL_2,,1511355242363.0679851100e16aad005c743af618452e.
> 18:24:03.006 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Id
> :1511355242363
> 18:24:03.007 [main] INFO com.flytxt.HbaseRegionMetaTest - Region start key
> :[] , Key length :0
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest - Region end key :
> [0, 0, 0, 0, 0, 0, 19, -57] , Key length :8
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest -
> -----------------------------------------------------------
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest -
> ===========================================================
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Name :
> SAMPLE_TBL_2,\x00\x00\x00\x00\x00\x00\x13\xC7,1511355242363.326b5175036efdeae89f9493b436e114.
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest - Region Id
> :1511355242363
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest - Region start key
> :[0, 0, 0, 0, 0, 0, 19, -57] , Key length :8
> 18:24:03.008 [main] INFO com.flytxt.HbaseRegionMetaTest - Region end key : []
> , Key length :0
> 18:24:03.009 [main] INFO com.flytxt.HbaseRegionMetaTest -
> -----------------------------------------------------------
> [ERROR] Tests run: 3, Failures: 2, Errors: 0, Skipped: 0, Time elapsed:
> 10.777 s <<< FAILURE! - in com.flytxt.HbaseRegionMetaTest
> [ERROR] testTableRegionStartAndEndKey[0](com.flytxt.HbaseRegionMetaTest)
> Time elapsed: 0.228 s <<< FAILURE!
> java.lang.AssertionError:
> Region end key error for
> SAMPLE_TBL_1,,1511355240515.56c8fd8e42228c3c1ec71f9a4da65f5f.
> Expected: is <8>
> but: was <7>
> at
> com.flytxt.HbaseRegionMetaTest.testTableRegionStartAndEndKey(HbaseRegionMetaTest.java:170)
> [ERROR] testTableRegionStartAndEndKey[0](com.flytxt.HbaseRegionMetaTest)
> Time elapsed: 0.23 s <<< FAILURE!
> java.lang.AssertionError:
> Region start key error for
> SAMPLE_TBL_1,\x00\x00\x00\x00\x00\x13\xB4,1511355240515.c06afed17b2a5c4fb54bacf704dd8a9e.
> Expected: is <8>
> but: was <7>
> at
> com.flytxt.HbaseRegionMetaTest.testTableRegionStartAndEndKey(HbaseRegionMetaTest.java:167)
> [INFO]
> [INFO] Results:
> [INFO]
> [ERROR] Failures:
> [ERROR]
> com.flytxt.HbaseRegionMetaTest.testTableRegionStartAndEndKey[0](com.flytxt.HbaseRegionMetaTest)
> [ERROR] Run 1: HbaseRegionMetaTest.testTableRegionStartAndEndKey:170 Region
> end key error for
> SAMPLE_TBL_1,,1511355240515.56c8fd8e42228c3c1ec71f9a4da65f5f.
> Expected: is <8>
> but: was <7>
> [ERROR] Run 2: HbaseRegionMetaTest.testTableRegionStartAndEndKey:167 Region
> start key error for
> SAMPLE_TBL_1,\x00\x00\x00\x00\x00\x13\xB4,1511355240515.c06afed17b2a5c4fb54bacf704dd8a9e.
> Expected: is <8>
> but: was <7>
> [INFO]
> [INFO]
> [ERROR] Tests run: 2, Failures: 1, Errors: 0, Skipped: 0
>
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