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https://issues.apache.org/jira/browse/HBASE-22346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831243#comment-16831243
]
HBase QA commented on HBASE-22346:
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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
17s{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
24s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
51s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
17s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 4m
31s{color} | {color:green} branch has no errors when building our shaded
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m
50s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
31s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m
8s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m
52s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m
52s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red} 1m
17s{color} | {color:red} hbase-server: The patch generated 6 new + 94 unchanged
- 1 fixed = 100 total (was 95) {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
31s{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} 4m
18s{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:green}+1{color} | {color:green} unit {color} | {color:green}137m
33s{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
21s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}178m 23s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce base:
https://builds.apache.org/job/PreCommit-HBASE-Build/226/artifact/patchprocess/Dockerfile
|
| JIRA Issue | HBASE-22346 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12967572/HBASE-22346.patch |
| Optional Tests | dupname asflicense javac javadoc unit findbugs
shadedjars hadoopcheck hbaseanti checkstyle compile |
| uname | Linux 3bcbdd583a67 4.4.0-143-generic #169~14.04.2-Ubuntu SMP Wed Feb
13 15:00:41 UTC 2019 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/hbase-personality.sh |
| git revision | master / 4379fe4ad3 |
| maven | version: Apache Maven 3.5.4
(1edded0938998edf8bf061f1ceb3cfdeccf443fe; 2018-06-17T18:33:14Z) |
| Default Java | 1.8.0_181 |
| findbugs | v3.1.11 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HBASE-Build/226/artifact/patchprocess/diff-checkstyle-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/226/testReport/ |
| Max. process+thread count | 4915 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/226/console |
| Powered by | Apache Yetus 0.9.0 http://yetus.apache.org |
This message was automatically generated.
> scanner priorities/deadline units are invalid for non-huge scanners
> -------------------------------------------------------------------
>
> Key: HBASE-22346
> URL: https://issues.apache.org/jira/browse/HBASE-22346
> Project: HBase
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Major
> Attachments: HBASE-22346.patch
>
>
> I was looking at using the priority (deadline) queue for scanner requests;
> what I see is that AnnotationReadingPriorityFunction, the only impl of the
> deadline function available, implements getDeadline as sqrt of the number of
> next() calls, from HBASE-10993.
> However, CallPriorityComparator.compare, its only caller, adds that
> "deadline" value to the callA.getReceiveTime() in milliseconds...
> That results in some sort of a meaningless value that I assume only make
> sense "by coincidence" for telling apart broad and specific classes of
> scanners... in practice next calls must be in the 1000s before it becomes
> meaningful vs small differences in ReceivedTime
> When there's contention from many scanners, e.g. small scanners for meta, or
> just users creating tons of scanners to the point where requests queue up,
> the actual deadline is not accounted for and the priority function itself is
> meaningless... In fact as queueing increases, it becomes worse because
> receivedtime differences grow.
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