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https://issues.apache.org/jira/browse/HBASE-12949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15508717#comment-15508717
 ] 

Hadoop QA commented on HBASE-12949:
-----------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 12m 6s 
{color} | {color:blue} Docker mode activated. {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:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s 
{color} | {color:red} The patch doesn't appear to include any new or modified 
tests. Please justify why no new tests are needed for this patch. Also please 
list what manual steps were performed to verify this patch. {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 10m 
23s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 7s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m 
1s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
19s {color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 1s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 50s 
{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 
33s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 11s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 11s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 
50s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 
18s {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} hadoopcheck {color} | {color:green} 
42m 4s {color} | {color:green} Patch does not cause any errors with Hadoop 
2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 2.7.1. {color} |
| {color:green}+1{color} | {color:green} hbaseprotoc {color} | {color:green} 0m 
22s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 4s 
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 47s 
{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 120m 56s 
{color} | {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 
54s {color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 200m 5s {color} 
| {color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | 
hadoop.hbase.master.procedure.TestMasterFailoverWithProcedures |
|   | hadoop.hbase.replication.TestMasterReplication |
|   | hadoop.hbase.master.TestAssignmentManagerMetrics |
|   | hadoop.hbase.master.procedure.TestWALProcedureStoreOnHDFS |
| Timed out junit tests | org.apache.hadoop.hbase.client.TestAdmin1 |
|   | org.apache.hadoop.hbase.client.TestHCM |
|   | org.apache.hadoop.hbase.client.TestMobRestoreSnapshotFromClient |
|   | 
org.apache.hadoop.hbase.client.TestCloneSnapshotFromClientWithRegionReplicas |
|   | org.apache.hadoop.hbase.client.TestCloneSnapshotFromClient |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=1.11.2 Server=1.11.2 Image:yetus/hbase:7bda515 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12829477/HBASE-12949-master-v3.patch
 |
| JIRA Issue | HBASE-12949 |
| Optional Tests |  asflicense  javac  javadoc  unit  findbugs  hadoopcheck  
hbaseanti  checkstyle  compile  |
| uname | Linux 07a8b5f9188d 3.13.0-92-generic #139-Ubuntu SMP Tue Jun 28 
20:42:26 UTC 2016 x86_64 x86_64 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 / 6624c67 |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| unit | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3623/artifact/patchprocess/patch-unit-hbase-server.txt
 |
| unit test logs |  
https://builds.apache.org/job/PreCommit-HBASE-Build/3623/artifact/patchprocess/patch-unit-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3623/testReport/ |
| modules | C: hbase-server U: hbase-server |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/3623/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Scanner can be stuck in infinite loop if the HFile is corrupted
> ---------------------------------------------------------------
>
>                 Key: HBASE-12949
>                 URL: https://issues.apache.org/jira/browse/HBASE-12949
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.94.3, 0.98.10
>            Reporter: Jerry He
>         Attachments: HBASE-12949-master-v2 (1).patch, 
> HBASE-12949-master-v2.patch, HBASE-12949-master-v2.patch, 
> HBASE-12949-master-v2.patch, HBASE-12949-master-v3.patch, 
> HBASE-12949-master.patch
>
>
> We've encountered problem where compaction hangs and never completes.
> After looking into it further, we found that the compaction scanner was stuck 
> in a infinite loop. See stack below.
> {noformat}
> org.apache.hadoop.hbase.regionserver.KeyValueHeap.generalizedSeek(KeyValueHeap.java:296)
> org.apache.hadoop.hbase.regionserver.KeyValueHeap.reseek(KeyValueHeap.java:257)
> org.apache.hadoop.hbase.regionserver.StoreScanner.reseek(StoreScanner.java:697)
> org.apache.hadoop.hbase.regionserver.StoreScanner.seekToNextRow(StoreScanner.java:672)
> org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:529)
> org.apache.hadoop.hbase.regionserver.compactions.Compactor.performCompaction(Compactor.java:223)
> {noformat}
> We identified the hfile that seems to be corrupted.  Using HFile tool shows 
> the following:
> {noformat}
> [biadmin@hdtest009 bin]$ hbase org.apache.hadoop.hbase.io.hfile.HFile -v -k 
> -m -f 
> /user/biadmin/CUMMINS_INSITE_V1/7106432d294dd844be15996ccbf2ba84/attributes/f1a7e3113c2c4047ac1fc8fbcb41d8b7
> 15/01/23 11:53:17 INFO Configuration.deprecation: hadoop.native.lib is 
> deprecated. Instead, use io.native.lib.available
> 15/01/23 11:53:18 INFO util.ChecksumType: Checksum using 
> org.apache.hadoop.util.PureJavaCrc32
> 15/01/23 11:53:18 INFO util.ChecksumType: Checksum can use 
> org.apache.hadoop.util.PureJavaCrc32C
> 15/01/23 11:53:18 INFO Configuration.deprecation: fs.default.name is 
> deprecated. Instead, use fs.defaultFS
> Scanning -> 
> /user/biadmin/CUMMINS_INSITE_V1/7106432d294dd844be15996ccbf2ba84/attributes/f1a7e3113c2c4047ac1fc8fbcb41d8b7
> WARNING, previous row is greater then current row
>         filename -> 
> /user/biadmin/CUMMINS_INSITE_V1/7106432d294dd844be15996ccbf2ba84/attributes/f1a7e3113c2c4047ac1fc8fbcb41d8b7
>         previous -> 
> \x00/20110203-094231205-79442793-1410161293068203000\x0Aattributes16794406\x00\x00\x01\x00\x00\x00\x00\x00\x00
>         current  ->
> Exception in thread "main" java.nio.BufferUnderflowException
>         at java.nio.Buffer.nextGetIndex(Buffer.java:489)
>         at java.nio.HeapByteBuffer.getInt(HeapByteBuffer.java:347)
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$ScannerV2.readKeyValueLen(HFileReaderV2.java:856)
>         at 
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$ScannerV2.next(HFileReaderV2.java:768)
>         at 
> org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.scanKeysValues(HFilePrettyPrinter.java:362)
>         at 
> org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.processFile(HFilePrettyPrinter.java:262)
>         at 
> org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.run(HFilePrettyPrinter.java:220)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
>         at 
> org.apache.hadoop.hbase.io.hfile.HFilePrettyPrinter.main(HFilePrettyPrinter.java:539)
>         at org.apache.hadoop.hbase.io.hfile.HFile.main(HFile.java:802)
> {noformat}
> Turning on Java Assert shows the following:
> {noformat}
> Exception in thread "main" java.lang.AssertionError: Key 
> 20110203-094231205-79442793-1410161293068203000/attributes:16794406/1099511627776/Minimum/vlen=15/mvcc=0
>  followed by a smaller key //0/Minimum/vlen=0/mvcc=0 in cf attributes
>         at 
> org.apache.hadoop.hbase.regionserver.StoreScanner.checkScanOrder(StoreScanner.java:672)
> {noformat}
> It shows that the hfile seems to be corrupted -- the keys don't seem to be 
> right.
> But Scanner is not able to give a meaningful error, but stuck in an infinite 
> loop in here:
> {code}
> KeyValueHeap.generalizedSeek()
> while ((scanner = heap.poll()) != null) {
> }
> {code}



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