[ https://issues.apache.org/jira/browse/HBASE-21621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16725341#comment-16725341 ]
Hadoop QA commented on HBASE-21621: ----------------------------------- | (x) *{color:red}-1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 16s{color} | {color:blue} Docker mode activated. {color} | || || || || {color:brown} Prechecks {color} || | {color:green}+1{color} | {color:green} hbaseanti {color} | {color:green} 0m 0s{color} | {color:green} Patch does not have any anti-patterns. {color} | | {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s{color} | {color:green} The patch does not contain any @author tags. {color} | | {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 0s{color} | {color:green} The patch appears to include 1 new or modified test files. {color} | || || || || {color:brown} master Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m 4s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 49s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 2s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m 42s{color} | {color:green} branch has no errors when building our shaded downstream artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 3s{color} | {color:green} master passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 29s{color} | {color:green} master passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 3m 58s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 49s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 49s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 1s{color} | {color:green} the patch passed {color} | | {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s{color} | {color:red} The patch has 1 line(s) that end in whitespace. Use git apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply {color} | | {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 3m 49s{color} | {color:green} patch has no errors when building our shaded downstream artifacts. {color} | | {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 8m 28s{color} | {color:green} Patch does not cause any errors with Hadoop 2.7.4 or 3.0.0. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 13s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 31s{color} | {color:green} the patch passed {color} | || || || || {color:brown} Other Tests {color} || | {color:red}-1{color} | {color:red} unit {color} | {color:red}242m 40s{color} | {color:red} hbase-server in the patch failed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 24s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black}278m 48s{color} | {color:black} {color} | \\ \\ || Reason || Tests || | Failed junit tests | hadoop.hbase.client.TestFromClientSide3 | | | hadoop.hbase.client.TestSnapshotTemporaryDirectoryWithRegionReplicas | | | hadoop.hbase.client.TestSnapshotDFSTemporaryDirectory | | | hadoop.hbase.master.procedure.TestServerCrashProcedureWithReplicas | | | hadoop.hbase.client.TestAdmin1 | | | hadoop.hbase.client.TestFromClientSide | | | hadoop.hbase.regionserver.TestJoinedScanners | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b | | JIRA Issue | HBASE-21621 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12952377/HBASE-21621.master.UT.patch | | Optional Tests | dupname asflicense javac javadoc unit findbugs shadedjars hadoopcheck hbaseanti checkstyle compile | | uname | Linux 3eb8b0d2eb1d 4.4.0-138-generic #164-Ubuntu SMP Tue Oct 2 17:16:02 UTC 2018 x86_64 GNU/Linux | | Build tool | maven | | Personality | /home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh | | git revision | master / 8991877bb2 | | maven | version: Apache Maven 3.5.4 (1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) | | Default Java | 1.8.0_181 | | findbugs | v3.1.0-RC3 | | whitespace | https://builds.apache.org/job/PreCommit-HBASE-Build/15330/artifact/patchprocess/whitespace-eol.txt | | unit | https://builds.apache.org/job/PreCommit-HBASE-Build/15330/artifact/patchprocess/patch-unit-hbase-server.txt | | Test Results | https://builds.apache.org/job/PreCommit-HBASE-Build/15330/testReport/ | | Max. process+thread count | 4858 (vs. ulimit of 10000) | | modules | C: hbase-server U: hbase-server | | Console output | https://builds.apache.org/job/PreCommit-HBASE-Build/15330/console | | Powered by | Apache Yetus 0.8.0 http://yetus.apache.org | This message was automatically generated. > Reversed scan does not return expected number of rows > ------------------------------------------------------ > > Key: HBASE-21621 > URL: https://issues.apache.org/jira/browse/HBASE-21621 > Project: HBase > Issue Type: Bug > Components: scan > Affects Versions: 3.0.0, 2.1.1 > Reporter: Nihal Jain > Priority: Critical > Attachments: HBASE-21621.master.UT.patch > > > *Steps to reproduce* > # Create a table and put some data into it (data should be big enough, say N > rows) > # Flush the table > # Scan the table with reversed set to true > *Expected Result* > N rows should be retrieved in reversed order > *Actual Result* > Less than expected number of rows is retrieved with following error in logs > {noformat} > 2018-12-19 21:55:32,944 DEBUG > [RpcServer.default.FPBQ.Fifo.handler=4,queue=0,port=39007] > regionserver.StoreScanner(1000): Switch to stream read (scanned=262214 bytes) > of cf > 2018-12-19 21:55:32,955 ERROR > [RpcServer.default.FPBQ.Fifo.handler=4,queue=0,port=39007] > ipc.RpcServer(471): Unexpected throwable object > java.lang.AssertionError: Key > \x00\x00\x00\x00\x00\x00\x00\x09/cf:a/1545236714675/Put/vlen=131072/seqid=4 > followed by a error order key > \x00\x00\x00\x00\x00\x00\x00\x0F/cf:a/1545236715545/Put/vlen=131072/seqid=8 > in cf cf in reversed scan > at > org.apache.hadoop.hbase.regionserver.ReversedStoreScanner.checkScanOrder(ReversedStoreScanner.java:105) > at > org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:568) > at > org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:153) > at > org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.populateResult(HRegion.java:6598) > at > org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextInternal(HRegion.java:6762) > at > org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.nextRaw(HRegion.java:6535) > at > org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3252) > at > org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3501) > at > org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42002) > at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413) > at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:130) > at > org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324) > at > org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304) > 2018-12-19 21:55:32,955 DEBUG > [RpcServer.default.FPBQ.Fifo.handler=4,queue=0,port=39007] > ipc.CallRunner(142): callId: 508 service: ClientService methodName: Scan > size: 47 connection: 127.0.0.1:48328 deadline: 1545236792955, > exception=java.io.IOException: Key > \x00\x00\x00\x00\x00\x00\x00\x09/cf:a/1545236714675/Put/vlen=131072/seqid=4 > followed by a error order key > \x00\x00\x00\x00\x00\x00\x00\x0F/cf:a/1545236715545/Put/vlen=131072/seqid=8 > in cf cf in reversed scan > 2018-12-19 21:55:33,060 DEBUG > [RpcServer.default.FPBQ.Fifo.handler=4,queue=0,port=39007] > ipc.CallRunner(142): callId: 511 service: ClientService methodName: Scan > size: 47 connection: 127.0.0.1:48328 deadline: 1545236792955, > exception=org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException: > Expected nextCallSeq: 1 But the nextCallSeq got from client: 0; > request=scanner_id: 2421102592655360183 number_of_rows: 2147483647 > close_scanner: false next_call_seq: 0 client_handles_partials: true > client_handles_heartbeats: true track_scan_metrics: false renew: false > 2018-12-19 21:55:33,060 DEBUG [Time-limited test] > client.ScannerCallableWithReplicas(200): Scan with primary region returns > org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException: > org.apache.hadoop.hbase.exceptions.OutOfOrderScannerNextException: Expected > nextCallSeq: 1 But the nextCallSeq got from client: 0; request=scanner_id: > 2421102592655360183 number_of_rows: 2147483647 close_scanner: false > next_call_seq: 0 client_handles_partials: true client_handles_heartbeats: > true track_scan_metrics: false renew: false > at > org.apache.hadoop.hbase.regionserver.RSRpcServices.checkScanNextCallSeq(RSRpcServices.java:3122) > at > org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:3455) > at > org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42002) > at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413) > at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:130) > at > org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324) > at > org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304) > {noformat} > *Analysis/Issue* > From initial analysis it seems problem occurs when we switch read type -- This message was sent by Atlassian JIRA (v7.6.3#76005)