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Date: Tue, 18 Jul 2017 06:30:01 +0000 (UTC)
From: "ramkrishna.s.vasudevan (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.13017194.1478089691000.270681.1500359401554@Atlassian.JIRA>
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Subject: [jira] [Commented] (HBASE-16993) BucketCache throw
 java.io.IOException: Invalid HFile block magic when DATA_BLOCK_ENCODING set
 to DIFF
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archived-at: Tue, 18 Jul 2017 06:30:10 -0000


    [ https://issues.apache.org/jira/browse/HBASE-16993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16091178#comment-16091178 ] 

ramkrishna.s.vasudevan commented on HBASE-16993:
------------------------------------------------

So since the initial idea of int + byte was saving the per entry overhead we are going to have it the same way?
So for the actual problem here since they had not been having blocks of multiple of 256, they ended up in more wastage as the calculaton was taking 4 + 1 way of calculating offset and so the suggestion is to adjust their block sizes accordingly (i mean the bucket cache block size config)?


> BucketCache throw java.io.IOException: Invalid HFile block magic when DATA_BLOCK_ENCODING set to DIFF
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-16993
>                 URL: https://issues.apache.org/jira/browse/HBASE-16993
>             Project: HBase
>          Issue Type: Bug
>          Components: BucketCache, io
>    Affects Versions: 1.1.3
>         Environment: hbase version 1.1.3
>            Reporter: liubangchen
>            Assignee: liubangchen
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16993.000.patch, HBASE-16993.001.patch, HBASE-16993.master.001.patch, HBASE-16993.master.002.patch, HBASE-16993.master.003.patch, HBASE-16993.master.004.patch, HBASE-16993.master.005.patch
>
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> hbase-site.xml setting
> <property>
>         <name>hbase.bucketcache.bucket.sizes</name>
>         <value>16384,32768,40960, 46000,49152,51200,65536,131072,524288</value>
> </property>
> <property>
>         <name>hbase.bucketcache.size</name>
>         <value>16384</value>
> </property>
> <property>
>         <name>hbase.bucketcache.ioengine</name>
>         <value>offheap</value>
> </property>
> <property>
>         <name>hfile.block.cache.size</name>
>         <value>0.3</value>
> </property>
> <property>
>         <name>hfile.block.bloom.cacheonwrite</name>
>         <value>true</value>
> </property>
> <property>
>         <name>hbase.rs.cacheblocksonwrite</name>
>         <value>true</value>
> </property>
> <property>
>         <name>hfile.block.index.cacheonwrite</name>
>         <value>true</value>
> </property
> n_splits = 200
> create 'usertable',{NAME =>'family', COMPRESSION => 'snappy', VERSIONS => 1,DATA_BLOCK_ENCODING => 'DIFF',CONFIGURATION => {'hbase.hregion.memstore.block.multiplier' => 5}},{DURABILITY => 'SKIP_WAL'},{SPLITS => (1..n_splits).map {|i| "user#{1000+i*(9999-1000)/n_splits}"}}
> load data
> bin/ycsb load hbase10 -P workloads/workloada -p table=usertable -p columnfamily=family -p fieldcount=10 -p fieldlength=100 -p recordcount=200000000 -p insertorder=hashed -p insertstart=0 -p clientbuffering=true -p durability=SKIP_WAL -threads 20 -s 
> run 
> bin/ycsb run hbase10 -P workloads/workloadb -p table=usertable -p columnfamily=family -p fieldcount=10 -p fieldlength=100 -p operationcount=20000000 -p readallfields=true -p clientbuffering=true -p requestdistribution=zipfian  -threads 10 -s
> log info
> 2016-11-02 20:20:20,261 ERROR [RW.default.readRpcServer.handler=36,queue=21,port=6020] bucket.BucketCache: Failed reading block fdcc7ed6f3b2498b9ef316cc8206c233_44819759 from bucket cache
> java.io.IOException: Invalid HFile block magic: \x00\x00\x00\x00\x00\x00\x00\x00
>         at org.apache.hadoop.hbase.io.hfile.BlockType.parse(BlockType.java:154)
>         at org.apache.hadoop.hbase.io.hfile.BlockType.read(BlockType.java:167)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlock.<init>(HFileBlock.java:273)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlock$1.deserialize(HFileBlock.java:134)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlock$1.deserialize(HFileBlock.java:121)
>         at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.getBlock(BucketCache.java:427)
>         at org.apache.hadoop.hbase.io.hfile.CombinedBlockCache.getBlock(CombinedBlockCache.java:85)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2.getCachedBlock(HFileReaderV2.java:266)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock(HFileReaderV2.java:403)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.loadDataBlockWithScanInfo(HFileBlockIndex.java:269)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:634)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:584)
>         at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekAtOrAfter(StoreFileScanner.java:247)
>         at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seek(StoreFileScanner.java:156)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.seekScanners(StoreScanner.java:363)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:217)
>         at org.apache.hadoop.hbase.regionserver.HStore.getScanner(HStore.java:2071)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:5369)
>         at org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:2546)
>         at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2532)
>         at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2514)
>         at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:6558)
>         at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:6537)
>         at org.apache.hadoop.hbase.regionserver.RSRpcServices.get(RSRpcServices.java:1935)
>         at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32381)
>         at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
>         at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
>         at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
>         at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
>         at java.lang.Thread.run(Thread.java:745)
> 2016-11-02 20:20:20,263 ERROR [RW.default.readRpcServer.handler=50,queue=20,port=6020] bucket.BucketCache: Failed reading block c45d6b14789546b785bae94c69c683d5_34198622 from bucket cache
> java.io.IOException: Invalid HFile block magic: \x00\x00\x00\x00\x00\x00\x00\x00
>         at org.apache.hadoop.hbase.io.hfile.BlockType.parse(BlockType.java:154)
>         at org.apache.hadoop.hbase.io.hfile.BlockType.read(BlockType.java:167)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlock.<init>(HFileBlock.java:273)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlock$1.deserialize(HFileBlock.java:134)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlock$1.deserialize(HFileBlock.java:121)
>         at org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.getBlock(BucketCache.java:427)
>         at org.apache.hadoop.hbase.io.hfile.CombinedBlockCache.getBlock(CombinedBlockCache.java:85)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2.getCachedBlock(HFileReaderV2.java:266)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock(HFileReaderV2.java:403)
>         at org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.loadDataBlockWithScanInfo(HFileBlockIndex.java:269)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:634)
>         at org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:584)
>         at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekAtOrAfter(StoreFileScanner.java:247)
>         at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seek(StoreFileScanner.java:156)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.seekScanners(StoreScanner.java:363)
>         at org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:217)
>         at org.apache.hadoop.hbase.regionserver.HStore.getScanner(HStore.java:2071)
>         at org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:5369)
>         at org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:2546)
>         at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2532)
>         at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:2514)
>         at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:6558)
>         at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:6537)
>         at org.apache.hadoop.hbase.regionserver.RSRpcServices.get(RSRpcServices.java:1935)
>         at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32381)
>         at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2117)
>         at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
>         at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
>         at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
>         at java.lang.Thread.run(Thread.java:745)


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