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From "wangyongqiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12959) Compact never end when table's dataBlockEncoding using PREFIX_TREE
Date Mon, 09 Nov 2015 11:50:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14996402#comment-14996402
] 

wangyongqiang commented on HBASE-12959:
---------------------------------------

 Compact never end when table's dataBlockEncoding using  PREFIX_TREE
 does anybody know if this problem is solved?  will this problem happen in hbase0.98.10


HBaseHBASE-12952, Seek with prefixtree may hang
and what about this problem, will this problem happen in hbase0.98.10


many thanks









>  Compact never end when table's dataBlockEncoding using  PREFIX_TREE
> --------------------------------------------------------------------
>
>                 Key: HBASE-12959
>                 URL: https://issues.apache.org/jira/browse/HBASE-12959
>             Project: HBase
>          Issue Type: Bug
>          Components: hbase
>    Affects Versions: 0.98.7
>         Environment: hbase 0.98.7
> hadoop 2.5.1
>            Reporter: wuchengzhi
>            Priority: Critical
>         Attachments: PrefixTreeCompact.java, txtfile-part1.txt.gz, txtfile-part2.txt.gz,
txtfile-part4.txt.gz, txtfile-part5.txt.gz, txtfile-part6.txt.gz, txtfile-part7.txt.gz
>
>
> I upgraded the hbase from 0.96.1.1 to 0.98.7 and hadoop from 2.2.0 to 2.5.1,some table
encoding using prefix-tree was abnormal for compacting,  the gui shows the table's Compaction
status is MAJOR_AND_MINOR(MAJOR) all the time.
> in the regionserver dump , there are some logs as below:
> Tasks:
> ===========================================================
> Task: Compacting info in PREFIX_NOT_COMPACT,,1421954285670.41ef60e2c221772626e141d5080296c5.
> Status: RUNNING:Compacting store info
> Running for 1097s  (on the  site running more than 3 days)
> ............................
> Thread 197 (regionserver60020-smallCompactions-1421954341530):
>   State: RUNNABLE
>   Blocked count: 7
>   Waited count: 3
>   Stack:
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.followFan(PrefixTreeArrayScanner.java:329)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.positionAtOrAfter(PrefixTreeArraySearcher.java:149)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.seekForwardToOrAfter(PrefixTreeArraySearcher.java:183)
>     org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeSeeker.seekToOrBeforeUsingPositionAtOrAfter(PrefixTreeSeeker.java:199)
>     org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeSeeker.seekToKeyInBlock(PrefixTreeSeeker.java:162)
>     org.apache.hadoop.hbase.io.hfile.HFileReaderV2$EncodedScannerV2.loadBlockAndSeekToKey(HFileReaderV2.java:1172)
>     org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.reseekTo(HFileReaderV2.java:573)
>     org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseekAtOrAfter(StoreFileScanner.java:257)
>     org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:173)
>     org.apache.hadoop.hbase.regionserver.NonLazyKeyValueScanner.doRealSeek(NonLazyKeyValueScanner.java:55)
>     org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:313)
>     org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:257)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:697)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.seekAsDirection(StoreScanner.java:683)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:533)
>     org.apache.hadoop.hbase.regionserver.compactions.Compactor.performCompaction(Compactor.java:222)
>     org.apache.hadoop.hbase.regionserver.compactions.DefaultCompactor.compact(DefaultCompactor.java:77)
>     org.apache.hadoop.hbase.regionserver.DefaultStoreEngine$DefaultCompactionContext.compact(DefaultStoreEngine.java:110)
>     org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:1099)
>     org.apache.hadoop.hbase.regionserver.HRegion.compact(HRegion.java:1482)
> Thread 177 (regionserver60020-smallCompactions-1421954314809):
>   State: RUNNABLE
>   Blocked count: 40
>   Waited count: 60
>   Stack:
>     org.apache.hadoop.hbase.codec.prefixtree.decode.column.ColumnReader.populateBuffer(ColumnReader.java:81)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.populateQualifier(PrefixTreeArrayScanner.java:471)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.populateNonRowFields(PrefixTreeArrayScanner.java:452)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.nextRow(PrefixTreeArrayScanner.java:226)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.advance(PrefixTreeArrayScanner.java:208)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.positionAtQualifierTimestamp(PrefixTreeArraySearcher.java:244)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.positionAtOrAfter(PrefixTreeArraySearcher.java:123)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.seekForwardToOrAfter(PrefixTreeArraySearcher.java:183)
>     org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeSeeker.seekToOrBeforeUsingPositionAtOrAfter(PrefixTreeSeeker.java:199)
>     org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeSeeker.seekToKeyInBlock(PrefixTreeSeeker.java:162)
>     org.apache.hadoop.hbase.io.hfile.HFileReaderV2$EncodedScannerV2.loadBlockAndSeekToKey(HFileReaderV2.java:1172)
>     org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.reseekTo(HFileReaderV2.java:573)
>     org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseekAtOrAfter(StoreFileScanner.java:257)
>     org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:173)
>     org.apache.hadoop.hbase.regionserver.NonLazyKeyValueScanner.doRealSeek(NonLazyKeyValueScanner.java:55)
>     org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:313)
>     org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:257)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:697)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.seekAsDirection(StoreScanner.java:683)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:533)
> Thread 170 (regionserver60020-smallCompactions-1421954306575):
>   State: RUNNABLE
>   Blocked count: 40
>   Waited count: 46
>   Stack:
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.nextRowInternal(PrefixTreeArrayScanner.java:259)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.nextRow(PrefixTreeArrayScanner.java:222)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArrayScanner.advance(PrefixTreeArrayScanner.java:208)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.positionAtQualifierTimestamp(PrefixTreeArraySearcher.java:244)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.positionAtOrAfter(PrefixTreeArraySearcher.java:123)
>     org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher.seekForwardToOrAfter(PrefixTreeArraySearcher.java:183)
>     org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeSeeker.seekToOrBeforeUsingPositionAtOrAfter(PrefixTreeSeeker.java:199)
>     org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeSeeker.seekToKeyInBlock(PrefixTreeSeeker.java:162)
>     org.apache.hadoop.hbase.io.hfile.HFileReaderV2$EncodedScannerV2.loadBlockAndSeekToKey(HFileReaderV2.java:1172)
>     org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.reseekTo(HFileReaderV2.java:573)
>     org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseekAtOrAfter(StoreFileScanner.java:257)
>     org.apache.hadoop.hbase.regionserver.StoreFileScanner.reseek(StoreFileScanner.java:173)
>     org.apache.hadoop.hbase.regionserver.NonLazyKeyValueScanner.doRealSeek(NonLazyKeyValueScanner.java:55)
>     org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:313)
>     org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:257)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:697)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.seekAsDirection(StoreScanner.java:683)
>     org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:533)
>     org.apache.hadoop.hbase.regionserver.compactions.Compactor.performCompaction(Compactor.java:222)
>     org.apache.hadoop.hbase.regionserver.compactions.DefaultCompactor.compact(DefaultCompactor.java:77)
> I also reproduce the appearance in the test env,actually the logs was fetch in my test
env. 
> schema :
> create 'PREFIX_NOT_COMPACT', {NAME=>'info',VERSIONS=>1,BLOCKCACHE => true,DATA_BLOCK_ENCODING
=> 'PREFIX_TREE', BLOOMFILTER => 'ROW', IN_MEMORY => 'false', REPLICATION_SCOPE =>
'0', COMPRESSION => 'LZ4',MIN_VERSIONS => '0', KEEP_DELETED_CELLS => 'false', BLOCKSIZE
=> '65536', TTL => '600'},SPLITS =>['20150202']
> data :
>      see the attachments , load from the text data or storefiles.



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