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https://issues.apache.org/jira/browse/HBASE-22441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16848906#comment-16848906
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Hudson commented on HBASE-22441:
--------------------------------
Results for branch branch-2.1
[build #1197 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.1/1197/]:
(x) *{color:red}-1 overall{color}*
----
details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.1/1197//General_Nightly_Build_Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.1/1197//JDK8_Nightly_Build_Report_(Hadoop2)/]
(x) {color:red}-1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2.1/1197//JDK8_Nightly_Build_Report_(Hadoop3)/]
(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> BucketCache NullPointerException in cacheBlock
> ----------------------------------------------
>
> Key: HBASE-22441
> URL: https://issues.apache.org/jira/browse/HBASE-22441
> Project: HBase
> Issue Type: Bug
> Components: BucketCache
> Affects Versions: 2.2.0, 2.0.5, 2.1.4
> Reporter: binlijin
> Assignee: binlijin
> Priority: Major
> Fix For: 3.0.0, 2.1.5, 2.1.6
>
> Attachments: HBASE-22441-master-v1.patch
>
>
> There is no synchronized in the check in cacheBlock, and wen see
> NullPointerException in production cluster.
> {code}
> 2019-05-17 18:17:21,299 ERROR
> [RpcServer.default.FPBQ.Fifo.handler=20,queue=7,port=16020] ipc.RpcServer:
> Unexpected throwable object
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.returnBlock(BucketCache.java:1665)
> at
> org.apache.hadoop.hbase.io.hfile.BlockCacheUtil.shouldReplaceExistingCacheBlock(BlockCacheUtil.java:250)
> at
> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.cacheBlockWithWait(BucketCache.java:426)
> at
> org.apache.hadoop.hbase.io.hfile.bucket.BucketCache.cacheBlock(BucketCache.java:412)
> at
> org.apache.hadoop.hbase.io.hfile.CombinedBlockCache.cacheBlock(CombinedBlockCache.java:67)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderImpl.lambda$readBlock$2(HFileReaderImpl.java:1501)
> at java.util.Optional.ifPresent(Optional.java:159)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderImpl.readBlock(HFileReaderImpl.java:1499)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$CellBasedKeyBlockIndexReader.loadDataBlockWithScanInfo(HFileBlockIndex.java:340)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.seekToDataBlock(HFileBlockIndex.java:577)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderImpl$HFileScannerImpl.seekBefore(HFileReaderImpl.java:869)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekToPreviousRow(StoreFileScanner.java:515)
> at
> org.apache.hadoop.hbase.regionserver.ReversedKeyValueHeap.next(ReversedKeyValueHeap.java:135)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:644)
> at
> org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:153)
> at
> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:6612)
> at
> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:6776)
> at
> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:6549)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3183)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3428)
> at
> org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42002)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:132)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)
> {code}
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