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https://issues.apache.org/jira/browse/HDFS-12914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16864547#comment-16864547
 ] 

Hadoop QA commented on HDFS-12914:
----------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
20s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
4s{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} branch-3.2 Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 23m 
52s{color} | {color:green} branch-3.2 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
56s{color} | {color:green} branch-3.2 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
46s{color} | {color:green} branch-3.2 passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  
4s{color} | {color:green} branch-3.2 passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
13m 37s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  
2s{color} | {color:green} branch-3.2 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
49s{color} | {color:green} branch-3.2 passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
 1s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
39s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
58s{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} shadedclient {color} | {color:green} 
13m  8s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  2m  
1s{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}104m  
6s{color} | {color:green} hadoop-hdfs in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
43s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}167m 40s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:63396be |
| JIRA Issue | HDFS-12914 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12971847/HDFS-12914.branch-3.2.patch
 |
| Optional Tests |  dupname  asflicense  compile  javac  javadoc  mvninstall  
mvnsite  unit  shadedclient  findbugs  checkstyle  |
| uname | Linux 9b3f5cd02460 3.13.0-153-generic #203-Ubuntu SMP Thu Jun 14 
08:52:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | branch-3.2 / 335aebb |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_212 |
| findbugs | v3.1.0-RC1 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HDFS-Build/26960/testReport/ |
| Max. process+thread count | 2848 (vs. ulimit of 10000) |
| modules | C: hadoop-hdfs-project/hadoop-hdfs U: 
hadoop-hdfs-project/hadoop-hdfs |
| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/26960/console |
| Powered by | Apache Yetus 0.8.0   http://yetus.apache.org |


This message was automatically generated.



> Block report leases cause missing blocks until next report
> ----------------------------------------------------------
>
>                 Key: HDFS-12914
>                 URL: https://issues.apache.org/jira/browse/HDFS-12914
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 2.8.0, 2.9.2
>            Reporter: Daryn Sharp
>            Assignee: Santosh Marella
>            Priority: Critical
>             Fix For: 3.3.0
>
>         Attachments: HDFS-12914-branch-2.001.patch, 
> HDFS-12914-trunk.00.patch, HDFS-12914-trunk.01.patch, HDFS-12914.005.patch, 
> HDFS-12914.006.patch, HDFS-12914.007.patch, HDFS-12914.008.patch, 
> HDFS-12914.branch-3.2.patch
>
>
> {{BlockReportLeaseManager#checkLease}} will reject FBRs from DNs for 
> conditions such as "unknown datanode", "not in pending set", "lease has 
> expired", wrong lease id, etc.  Lease rejection does not throw an exception.  
> It returns false which bubbles up to  {{NameNodeRpcServer#blockReport}} and 
> interpreted as {{noStaleStorages}}.
> A re-registering node whose FBR is rejected from an invalid lease becomes 
> active with _no blocks_.  A replication storm ensues possibly causing DNs to 
> temporarily go dead (HDFS-12645), leading to more FBR lease rejections on 
> re-registration.  The cluster will have many "missing blocks" until the DNs 
> next FBR is sent and/or forced.



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