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https://issues.apache.org/jira/browse/HBASE-21811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16758890#comment-16758890
]
Hadoop QA commented on HBASE-21811:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m
14s{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:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
26s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m
15s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m
15s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
22s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 4m
5s{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
39s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
43s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
16s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m
9s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m
16s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m
16s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
19s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 4m
8s{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 38s{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
49s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
45s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 3m
23s{color} | {color:green} hbase-procedure in the patch passed. {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red}127m 54s{color}
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
53s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}173m 19s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests |
hadoop.hbase.master.assignment.TestWakeUpUnexpectedProcedure |
| | hadoop.hbase.replication.TestSyncReplicationStandbyKillRS |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:b002b0b |
| JIRA Issue | HBASE-21811 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12957355/HBASE-21811-v1.patch |
| Optional Tests | dupname asflicense javac javadoc unit findbugs
shadedjars hadoopcheck hbaseanti checkstyle compile |
| uname | Linux ca520ca841fd 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 / 64c32720d6 |
| maven | version: Apache Maven 3.5.4
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.0-RC3 |
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/15851/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/15851/testReport/ |
| Max. process+thread count | 5052 (vs. ulimit of 10000) |
| modules | C: hbase-procedure hbase-server U: . |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/15851/console |
| Powered by | Apache Yetus 0.8.0 http://yetus.apache.org |
This message was automatically generated.
> region can be opened on two servers due to race condition with procedures and
> server reports
> --------------------------------------------------------------------------------------------
>
> Key: HBASE-21811
> URL: https://issues.apache.org/jira/browse/HBASE-21811
> Project: HBase
> Issue Type: Bug
> Components: amv2
> Affects Versions: 3.0.0
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Blocker
> Fix For: 3.0.0, 2.2.0
>
> Attachments: HBASE-21811-UT.patch, HBASE-21811-v1.patch,
> HBASE-21811.patch
>
>
> Looks like the region server responses are being processed incorrectly in
> places allowing te region to be opened on two servers.
> * The region server report handling in procedures should check which server
> is reporting.
> * Also although I didn't check (and it isn't implicated in this bug), RS must
> check in OPEN that it's actually the correct RS master sent open to (w.r.t.
> start timestamp)
> This was previosuly "mitigated" by master killing the RS with incorrect
> reports, but due to race conditions with reports and assignment the kill was
> replaced with a warning, so now this condition persists.
> Regardless, the kill approach is not a good fix because there's still a
> window when a region can be opened on two servers.
> A region is being opened by server_48c. The server dies, and we process the
> retry correctly (retry=3 because 2 previous similar open failures were
> processed correctly).
> We start opening it on server_1aa now.
> {noformat}
> 2019-01-28 18:12:09,862 INFO [KeepAlivePEWorker-104]
> assignment.RegionStateStore: pid=4915 updating hbase:meta
> row=8be2a423b16471b9417f0f7de04281c6, regionState=ABNORMALLY_CLOSED
> 2019-01-28 18:12:09,862 INFO [KeepAlivePEWorker-104]
> procedure.ServerCrashProcedure: pid=11944,
> state=RUNNABLE:SERVER_CRASH_ASSIGN, hasLock=true; ServerCrashProcedure
> server=server_48c,17020,1548726406632, splitWal=true, meta=false found RIT
> pid=4915, ppid=7, state=WAITING:REGION_STATE_TRANSITION_CONFIRM_OPENED,
> hasLock=true; TransitRegionStateProcedure table=table,
> region=8be2a423b16471b9417f0f7de04281c6, ASSIGN; rit=OPENING,
> location=server_48c,17020,1548726406632, table=table,
> region=8be2a423b16471b9417f0f7de04281c6
> 2019-01-28 18:12:10,778 INFO [KeepAlivePEWorker-80]
> assignment.TransitRegionStateProcedure: Retry=3 of max=2147483647; pid=4915,
> ppid=7, state=RUNNABLE:REGION_STATE_TRANSITION_CONFIRM_OPENED, hasLock=true;
> TransitRegionStateProcedure table=table,
> region=8be2a423b16471b9417f0f7de04281c6, ASSIGN; rit=ABNORMALLY_CLOSED,
> location=null
> ...
> 2019-01-28 18:12:10,902 INFO [KeepAlivePEWorker-80]
> assignment.TransitRegionStateProcedure: Starting pid=4915, ppid=7,
> state=RUNNABLE:REGION_STATE_TRANSITION_GET_ASSIGN_CANDIDATE, hasLock=true;
> TransitRegionStateProcedure table=table,
> region=8be2a423b16471b9417f0f7de04281c6, ASSIGN; rit=ABNORMALLY_CLOSED,
> location=null; forceNewPlan=true, retain=false
> 2019-01-28 18:12:11,114 INFO [PEWorker-7] assignment.RegionStateStore:
> pid=4915 updating hbase:meta row=8be2a423b16471b9417f0f7de04281c6,
> regionState=OPENING, regionLocation=server_1aa,17020,1548727658713
> {noformat}
> However, we get the remote procedure failure from 48c after we've already
> started that.
> It actually tried to open on the restarted RS, which makes me wonder if this
> is safe also w.r.t. other races - what if RS already initialized and didn't
> error out?
> Need to check if we verify the start code expected by master on RS when
> opening.
> {noformat}
> 2019-01-28 18:12:12,179 WARN [RSProcedureDispatcher-pool4-t362]
> assignment.RegionRemoteProcedureBase: The remote operation pid=11050,
> ppid=4915, state=SUCCESS, hasLock=false;
> org.apache.hadoop.hbase.master.assignment.OpenRegionProcedure for region
> {ENCODED => 8be2a423b16471b9417f0f7de04281c6 ... to server
> server_48c,17020,1548726406632 failed
> org.apache.hadoop.hbase.ipc.ServerNotRunningYetException:
> org.apache.hadoop.hbase.ipc.ServerNotRunningYetException: Server
> server_48c,17020,1548727752747 is not running yet
> 2019-01-28 18:12:12,179 WARN [RSProcedureDispatcher-pool4-t362]
> procedure.RSProcedureDispatcher: server server_48c,17020,1548726406632 is not
> up for a while; try a new one
> {noformat}
> Without any other reason (at least logged), the RIT immediately retries again
> and chooses a new candidate. It then retries again and goes to the new 48c,
> but that's unrelated.
> {noformat}
> 2019-01-28 18:12:12,289 INFO [KeepAlivePEWorker-100]
> assignment.TransitRegionStateProcedure: Retry=4 of max=2147483647; pid=4915,
> ppid=7, state=RUNNABLE:REGION_STATE_TRANSITION_CONFIRM_OPENED, hasLock=true;
> TransitRegionStateProcedure table=table,
> region=8be2a423b16471b9417f0f7de04281c6, ASSIGN; rit=OPENING,
> location=server_1aa,17020,1548727658713
> ...
> 2019-01-28 18:12:12,668 INFO [PEWorker-9] assignment.RegionStateStore:
> pid=4915 updating hbase:meta row=8be2a423b16471b9417f0f7de04281c6,
> regionState=OPENING, regionLocation=server_fd3,17020,1548727536972
> ....
> 2019-01-28 18:26:29,480 INFO [KeepAlivePEWorker-154]
> assignment.RegionStateStore: pid=4915 updating hbase:meta
> row=8be2a423b16471b9417f0f7de04281c6, regionState=OPENING,
> regionLocation=server_48c,17020,1548727752747
> {noformat}
> What does happen though is that 1aa, that never got a chance to respond at
> the time that the RIT erroneously retried above, finishes opening the region
> - which master ignores
> {noformat}
> 2019-01-28 18:27:42,424 WARN
> [RpcServer.default.FPBQ.Fifo.handler=29,queue=4,port=17000]
> assignment.TransitRegionStateProcedure: Received report OPENED transition
> from server_1aa,17020,1548727658713 for rit=OPENING,
> location=server_48c,17020,1548727752747, table=table,
> region=8be2a423b16471b9417f0f7de04281c6, pid=4915 but the region is not on
> it, should be a retry, ignore
> {noformat}
> And starts spamming these warnings until finally the region is open in two
> places.
> {noformat}
> 2019-01-28 18:27:45,500 WARN
> [RpcServer.default.FPBQ.Fifo.handler=42,queue=2,port=17000]
> assignment.AssignmentManager: rit=OPENING,
> location=server_48c,17020,1548727752747, table=table,
> region=8be2a423b16471b9417f0f7de04281c6 reported OPEN on
> server=server_1aa,17020,1548727658713 but state has otherwise
> ...
> 2019-01-28 18:51:21,197 WARN
> [RpcServer.default.FPBQ.Fifo.handler=10,queue=0,port=17000]
> assignment.AssignmentManager: rit=OPEN,
> location=server_48c,17020,1548727752747, table=table,
> region=8be2a423b16471b9417f0f7de04281c6 reported OPEN on
> server=server_1aa,17020,1548727658713 but state has otherwise
> {noformat}
> This can result in data loss.
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