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https://issues.apache.org/jira/browse/HBASE-23702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17038693#comment-17038693
 ] 

HBase QA commented on HBASE-23702:
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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 
38s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} dupname {color} | {color:green}  0m  
0s{color} | {color:green} No case conflicting files found. {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:orange}-0{color} | {color:orange} test4tests {color} | {color:orange}  
0m  0s{color} | {color:orange} 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:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  5m 
15s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
54s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  1m 
 7s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  4m 
41s{color} | {color:green} branch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
33s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  4m 
19s{color} | {color:blue} Used deprecated FindBugs config; considering 
switching to SpotBugs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 
16s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  4m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
54s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  1m  
4s{color} | {color:red} hbase-server: The patch generated 2 new + 21 unchanged 
- 0 fixed = 23 total (was 21) {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 
39s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
15m 32s{color} | {color:green} Patch does not cause any errors with Hadoop 
2.8.5 2.9.2 or 3.1.2. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
35s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  4m 
22s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 64m  
5s{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
34s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}119m 52s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.6 Server=19.03.6 base: 
https://builds.apache.org/job/PreCommit-HBASE-Build/1132/artifact/patchprocess/Dockerfile
 |
| JIRA Issue | HBASE-23702 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12993723/HBASE-23702-000.patch 
|
| Optional Tests | dupname asflicense javac javadoc unit spotbugs findbugs 
shadedjars hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 61f085826cf4 4.15.0-58-generic #64-Ubuntu SMP Tue Aug 6 
11:12:41 UTC 2019 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/hbase-personality.sh |
| git revision | master / e11dbf36a5 |
| Default Java | 1.8.0_181 |
| checkstyle | 
https://builds.apache.org/job/PreCommit-HBASE-Build/1132/artifact/patchprocess/diff-checkstyle-hbase-server.txt
 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/1132/testReport/ |
| Max. process+thread count | 8066 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/1132/console |
| versions | git=2.11.0 maven=2018-06-17T18:33:14Z) findbugs=3.1.11 |
| Powered by | Apache Yetus 0.11.1 https://yetus.apache.org |


This message was automatically generated.



> `hbase.hstore.flusher.count` setting to 0 breaks HMaster
> --------------------------------------------------------
>
>                 Key: HBASE-23702
>                 URL: https://issues.apache.org/jira/browse/HBASE-23702
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 2.2.3
>         Environment: HBase-2.2.3 
> Java openjdk 1.8.0_222 
> Ubuntu 18.04
>            Reporter: Ctest
>            Priority: Major
>         Attachments: HBASE-23702-000.patch, HBASE-23702-000.patch, 
> HBASE-23702-000.patch
>
>
> Summary 
> The configuration parameter `hbase.hstore.flusher.count` allows `0` (which 
> turns out to be a bad value after I understand the source code).
> When we set `hbase.hstore.flusher.count` to 0, HMaster will fail in 200,000 
> ms without any error message, but
> ```
>  java.lang.RuntimeException: Master not initialized after 200000ms
> ```
>  
> There’s no messages pinpointing `hbase.hstore.flusher.count` being the root 
> cause.
>  
> 0 means `MemStoreFlusher` is not alive. During the initialization time of 
> HMaster, `isHealthy()` will be called and it will try to check if 
> `MemStoreFlusher` is alive or not.  However, since we set 
> `hbase.hstore.flusher.count` to 0, there will be no flusher created at the 
> first place, which cause`isHealthy()` to return false. As a consequence, 
> HRegionServer does not enter its main loop.
>  
> *How To Reproduce* 
>  
> The version of HBase: 2.2.3
>  
>  # Set the value of configuration parameter `hbase.hstore.flusher.count` to 
> `0` in “conf/hbase-site.xml”
>  # Start hbase by running “bin/start-hbase.sh”
>  # Wait for 3-4 minutes
>  # Open the log file “logs/hbase-<username>- master -<pcname>.log”



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