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https://issues.apache.org/jira/browse/HBASE-16993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15650679#comment-15650679
]
liubangchen commented on HBASE-16993:
-------------------------------------
i think that @chunhui shen has explained clearly. in my personal view，this path
can work well，thanks
> 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: io
> Affects Versions: 1.1.3
> Environment: hbase version 1.1.3
> Reporter: liubangchen
> Assignee: liubangchen
> Attachments: HBASE-16993.000.patch, HBASE-16993.001.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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