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https://issues.apache.org/jira/browse/HBASE-22749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16950222#comment-16950222
]
HBase QA commented on HBASE-22749:
----------------------------------
| (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
1s{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:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 11 new or modified test
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 5m
3s{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
25s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 4m
35s{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
34s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue} 4m
5s{color} | {color:blue} Used deprecated FindBugs config; considering switching
to SpotBugs. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m
2s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 4m
52s{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:red}-1{color} | {color:red} checkstyle {color} | {color:red} 1m
24s{color} | {color:red} hbase-server: The patch generated 11 new + 310
unchanged - 45 fixed = 321 total (was 355) {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m
0s{color} | {color:red} The patch has 5 line(s) that end in whitespace. Use git
apply --whitespace=fix <<patch_file>>. Refer https://git-scm.com/docs/git-apply
{color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green} 4m
32s{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 13s{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
34s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} findbugs {color} | {color:red} 4m
12s{color} | {color:red} hbase-server generated 3 new + 0 unchanged - 0 fixed =
3 total (was 0) {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}164m 25s{color}
| {color:red} hbase-server in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
32s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}219m 37s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:hbase-server |
| | org.apache.hadoop.hbase.mob.FileSelection defines
compareTo(FileSelection) and uses Object.equals() At
DefaultMobStoreCompactor.java:Object.equals() At
DefaultMobStoreCompactor.java:[lines 613-618] |
| | org.apache.hadoop.hbase.mob.Generation defines compareTo(Generation) and
uses Object.equals() At DefaultMobStoreCompactor.java:Object.equals() At
DefaultMobStoreCompactor.java:[lines 791-796] |
| | Unused field:DefaultMobStoreCompactor.java |
| Failed junit tests | hadoop.hbase.client.TestAsyncRegionAdminApi |
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|| Subsystem || Report/Notes ||
| Docker | Client=19.03.3 Server=19.03.3 base:
https://builds.apache.org/job/PreCommit-HBASE-Build/951/artifact/patchprocess/Dockerfile
|
| JIRA Issue | HBASE-22749 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12982865/HBASE-22749-master-v2.patch
|
| Optional Tests | dupname asflicense javac javadoc unit spotbugs findbugs
shadedjars hadoopcheck hbaseanti checkstyle compile |
| uname | Linux b2ed0ead6a42 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 / 73d69c6157 |
| Default Java | 1.8.0_181 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HBASE-Build/951/artifact/patchprocess/diff-checkstyle-hbase-server.txt
|
| whitespace |
https://builds.apache.org/job/PreCommit-HBASE-Build/951/artifact/patchprocess/whitespace-eol.txt
|
| findbugs |
https://builds.apache.org/job/PreCommit-HBASE-Build/951/artifact/patchprocess/new-findbugs-hbase-server.html
|
| unit |
https://builds.apache.org/job/PreCommit-HBASE-Build/951/artifact/patchprocess/patch-unit-hbase-server.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/951/testReport/ |
| Max. process+thread count | 4396 (vs. ulimit of 10000) |
| modules | C: hbase-server U: hbase-server |
| Console output |
https://builds.apache.org/job/PreCommit-HBASE-Build/951/console |
| versions | git=2.11.0 maven=2018-06-17T18:33:14Z) findbugs=3.1.11 |
| Powered by | Apache Yetus 0.11.0 https://yetus.apache.org |
This message was automatically generated.
> Distributed MOB compactions
> ----------------------------
>
> Key: HBASE-22749
> URL: https://issues.apache.org/jira/browse/HBASE-22749
> Project: HBase
> Issue Type: New Feature
> Components: mob
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Priority: Major
> Attachments: HBASE-22749-branch-2.2-v4.patch,
> HBASE-22749-master-v1.patch, HBASE-22749-master-v2.patch,
> HBase-MOB-2.0-v1.pdf, HBase-MOB-2.0-v2.1.pdf, HBase-MOB-2.0-v2.2.pdf,
> HBase-MOB-2.0-v2.pdf
>
>
> There are several drawbacks in the original MOB 1.0 (Moderate Object
> Storage) implementation, which can limit the adoption of the MOB feature:
> # MOB compactions are executed in a Master as a chore, which limits
> scalability because all I/O goes through a single HBase Master server.
> # Yarn/Mapreduce framework is required to run MOB compactions in a scalable
> way, but this won’t work in a stand-alone HBase cluster.
> # Two separate compactors for MOB and for regular store files and their
> interactions can result in a data loss (see HBASE-22075)
> The design goals for MOB 2.0 were to provide 100% MOB 1.0 - compatible
> implementation, which is free of the above drawbacks and can be used as a
> drop in replacement in existing MOB deployments. So, these are design goals
> of a MOB 2.0:
> # Make MOB compactions scalable without relying on Yarn/Mapreduce framework
> # Provide unified compactor for both MOB and regular store files
> # Make it more robust especially w.r.t. to data losses.
> # Simplify and reduce the overall MOB code.
> # Provide 100% compatible implementation with MOB 1.0.
> # No migration of data should be required between MOB 1.0 and MOB 2.0 - just
> software upgrade.
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