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Ashu Pachauri commented on HBASE-18186: --------------------------------------- bq. Can you confirm if this FileNotFoundException is happening repeatedly for the same set of files? I picked a couple of regionservers facing this.. it's not happening repeatedly for the same set of files (or at least I could not find such a case) > Frequent FileNotFoundExceptions in region server logs > ----------------------------------------------------- > > Key: HBASE-18186 > URL: https://issues.apache.org/jira/browse/HBASE-18186 > Project: HBase > Issue Type: Bug > Components: Compaction, Scanners > Affects Versions: 1.3.1 > Reporter: Ashu Pachauri > > We see frequent FileNotFoundException in regionserver logs on multiple code > paths trying to reference non existing store files. I know that there have > been multiple bugs in store file accounting of compacted store files. > Examples include: HBASE-16964 , HBASE-16754 and HBASE-16788. > Observations: > 1. The issue mentioned here also seems to bear a similar flavor, because we > are not seeing rampant dataloss given the frequency of these exceptions in > the logs. So, it's more likely an accounting issue, but I could be wrong. > 2. The frequency with which this happens on scan heavy workload is at least > one order of magnitude higher than a mixed workload. > Stack traces: > {Code} > WARN backup.HFileArchiver: Failed to archive class > org.apache.hadoop.hbase.backup.HFileArchiver$FileableStoreFile, > file:hdfs://<region_dir>/<cf>/<store_file> because it does not exist! > Skipping and continuing on. > java.io.FileNotFoundException: File/Directory <region_dir>/<cf>/<store_file> > does not exist. > at > org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.setTimes(FSDirAttrOp.java:121) > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimes(FSNamesystem.java:1910) > at > org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setTimes(NameNodeRpcServer.java:1223) > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setTimes(ClientNamenodeProtocolServerSideTranslatorPB.java:915) > at > org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2045) > at sun.reflect.GeneratedConstructorAccessor55.newInstance(Unknown > Source) > at > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at java.lang.reflect.Constructor.newInstance(Constructor.java:423) > at > org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106) > at > org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73) > at org.apache.hadoop.hdfs.DFSClient.setTimes(DFSClient.java:3115) > at > org.apache.hadoop.hdfs.DistributedFileSystem$30.doCall(DistributedFileSystem.java:1520) > at > org.apache.hadoop.hdfs.DistributedFileSystem$30.doCall(DistributedFileSystem.java:1516) > at > org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) > at > org.apache.hadoop.hdfs.DistributedFileSystem.setTimes(DistributedFileSystem.java:1530) > at > org.apache.hadoop.fs.FilterFileSystem.setTimes(FilterFileSystem.java:496) > at > org.apache.hadoop.hbase.util.FSUtils.renameAndSetModifyTime(FSUtils.java:1805) > at > org.apache.hadoop.hbase.backup.HFileArchiver$File.moveAndClose(HFileArchiver.java:575) > at > org.apache.hadoop.hbase.backup.HFileArchiver.resolveAndArchiveFile(HFileArchiver.java:410) > at > org.apache.hadoop.hbase.backup.HFileArchiver.resolveAndArchive(HFileArchiver.java:320) > at > org.apache.hadoop.hbase.backup.HFileArchiver.archiveStoreFiles(HFileArchiver.java:242) > at > org.apache.hadoop.hbase.regionserver.HRegionFileSystem.removeStoreFiles(HRegionFileSystem.java:433) > at > org.apache.hadoop.hbase.regionserver.HStore.removeCompactedfiles(HStore.java:2723) > at > org.apache.hadoop.hbase.regionserver.HStore.closeAndArchiveCompactedFiles(HStore.java:2672) > at > org.apache.hadoop.hbase.regionserver.CompactedHFilesDischargeHandler.process(CompactedHFilesDischargeHandler.java:43) > at > org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > Caused by: > org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): > File/Directory <region_dir>/<cf>/<store_file> does not exist. > at > org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.setTimes(FSDirAttrOp.java:121) > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setTimes(FSNamesystem.java:1910) > at > org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setTimes(NameNodeRpcServer.java:1223) > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setTimes(ClientNamenodeProtocolServerSideTranslatorPB.java:915) > at > org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2045) > at org.apache.hadoop.ipc.Client.call(Client.java:1476) > at org.apache.hadoop.ipc.Client.call(Client.java:1413) > at > org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) > at com.sun.proxy.$Proxy16.setTimes(Unknown Source) > at > org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.setTimes(ClientNamenodeProtocolTranslatorPB.java:854) > at sun.reflect.GeneratedMethodAccessor138.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) > at com.sun.proxy.$Proxy17.setTimes(Unknown Source) > at sun.reflect.GeneratedMethodAccessor138.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at org.apache.hadoop.hbase.fs.HFileSystem$1.invoke(HFileSystem.java:302) > at com.sun.proxy.$Proxy18.setTimes(Unknown Source) > at org.apache.hadoop.hdfs.DFSClient.setTimes(DFSClient.java:3113) > ... 18 more > {Code} > {Code} > ERROR regionserver.CompactSplitThread: Compaction selection failed Store = > <cf>, pri = 289 > java.io.FileNotFoundException: File does not exist: > hdfs://<region_dir>/<cf>/<store_file> > at > org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1309) > at > org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:1301) > at > org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) > at > org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1317) > at > org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:421) > at > org.apache.hadoop.hbase.regionserver.StoreFileInfo.getReferencedFileStatus(StoreFileInfo.java:342) > at > org.apache.hadoop.hbase.regionserver.StoreFileInfo.getFileStatus(StoreFileInfo.java:355) > at > org.apache.hadoop.hbase.regionserver.StoreFileInfo.getModificationTime(StoreFileInfo.java:360) > at > org.apache.hadoop.hbase.regionserver.StoreFile.getModificationTimeStamp(StoreFile.java:321) > at > org.apache.hadoop.hbase.regionserver.StoreUtils.getLowestTimestamp(StoreUtils.java:63) > at > org.apache.hadoop.hbase.regionserver.compactions.RatioBasedCompactionPolicy.shouldPerformMajorCompaction(RatioBasedCompactionPolicy.java:64) > at > org.apache.hadoop.hbase.regionserver.compactions.SortedCompactionPolicy.selectCompaction(SortedCompactionPolicy.java:82) > at > org.apache.hadoop.hbase.regionserver.DefaultStoreEngine$DefaultCompactionContext.select(DefaultStoreEngine.java:107) > at > org.apache.hadoop.hbase.regionserver.HStore.requestCompaction(HStore.java:1661) > at > org.apache.hadoop.hbase.regionserver.CompactSplitThread.selectCompaction(CompactSplitThread.java:369) > at > org.apache.hadoop.hbase.regionserver.CompactSplitThread.access$100(CompactSplitThread.java:59) > at > org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.doCompaction(CompactSplitThread.java:494) > at > org.apache.hadoop.hbase.regionserver.CompactSplitThread$CompactionRunner.run(CompactSplitThread.java:564) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > 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