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https://issues.apache.org/jira/browse/PHOENIX-5923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17259361#comment-17259361
 ] 

Hadoop QA commented on PHOENIX-5923:
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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}  1m  
2s{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: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:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 10m 
50s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
5s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  2m 
 2s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
54s{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} spotbugs {color} | {color:blue}  3m 
46s{color} | {color:blue} phoenix-core in master has 973 extant spotbugs 
warnings. {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  9m 
42s{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} cc {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:red}-1{color} | {color:red} checkstyle {color} | {color:red}  2m  
8s{color} | {color:red} phoenix-core: The patch generated 127 new + 4608 
unchanged - 71 fixed = 4735 total (was 4679) {color} |
| {color:green}+1{color} | {color:green} prototool {color} | {color:green}  0m  
1s{color} | {color:green} There were no new prototool issues. {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} javadoc {color} | {color:green}  0m 
51s{color} | {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} spotbugs {color} | {color:red}  3m 
25s{color} | {color:red} phoenix-core generated 1 new + 971 unchanged - 2 fixed 
= 972 total (was 973) {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red}111m  1s{color} 
| {color:red} phoenix-core in the patch failed. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red}  0m 
23s{color} | {color:red} The patch generated 1 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black}149m  8s{color} | 
{color:black} {color} |
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|| Reason || Tests ||
| FindBugs | module:phoenix-core |
|  |  index must be non-null but is marked as nullable  At 
IndexMaintainer.java:is marked as nullable  At IndexMaintainer.java:[line 188] |
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|| Subsystem || Report/Notes ||
| Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/artifact/patchprocess/Dockerfile
 |
| JIRA Issue | PHOENIX-5923 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/13018205/PHOENIX-5923.master.001.patch
 |
| Optional Tests | dupname asflicense javac javadoc unit spotbugs hbaseanti 
checkstyle compile cc prototool |
| uname | Linux bdbc5a1b487c 4.15.0-60-generic #67-Ubuntu SMP Thu Aug 22 
16:55:30 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev/phoenix-personality.sh |
| git revision | master / 0880b35 |
| Default Java | Private Build-1.8.0_242-8u242-b08-0ubuntu3~16.04-b08 |
| checkstyle | 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/artifact/patchprocess/diff-checkstyle-phoenix-core.txt
 |
| spotbugs | 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/artifact/patchprocess/new-spotbugs-phoenix-core.html
 |
| unit | 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/artifact/patchprocess/patch-unit-phoenix-core.txt
 |
|  Test Results | 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/testReport/ |
| asflicense | 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/artifact/patchprocess/patch-asflicense-problems.txt
 |
| Max. process+thread count | 6792 (vs. ulimit of 30000) |
| modules | C: phoenix-core U: phoenix-core |
| Console output | 
https://ci-hadoop.apache.org/job/PreCommit-PHOENIX-Build/343/console |
| versions | git=2.7.4 maven=3.3.9 spotbugs=4.1.3 prototool=1.10.0-dev |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |


This message was automatically generated.



> Supporting the single cell storage format for mutable global indexes
> --------------------------------------------------------------------
>
>                 Key: PHOENIX-5923
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5923
>             Project: Phoenix
>          Issue Type: Improvement
>    Affects Versions: 5.0.0, 4.14.3
>            Reporter: Kadir OZDEMIR
>            Assignee: Gokcen Iskender
>            Priority: Major
>         Attachments: PHOENIX-5923.4.x.001.patch, PHOENIX-5923.master.001.patch
>
>
> It is known that IMMUTABLE_STORAGE_SCHEME = SINGLE_CELL_ARRAY_WITH_OFFSETS 
> leads to performance improvement and storage saving. As the name implies this 
> storage scheme is currently supported for immutable tables only. Supporting 
> the SINGLE_CELL_ARRAY_WITH_OFFSETS storage format for mutable table requires 
> reading existing rows for before mutating them, i.e., read-modify-write. 
> However, this storage scheme can be used for mutable global index tables 
> without any additional IO operation since for every index table update, we 
> always read the corresponding data table row and generate the full index row 
> from the current state of the data table row and the pending mutation on this 
> row. This full index row can be stored using the 
> SINGLE_CELL_ARRAY_WITH_OFFSETS storage format even though the data table can 
> continue using a mutable storage format. This will allow index tables to 
> enjoy the performance improvement and storage saving due to this storage 
> format.
>  
> Gokcen Iskender: We can also repurpose this Jira and add immutable tables as 
> well. We can say that the Immutable tables can have ONE_CELL_PER_COLUMN 
> storage format and have indexes that have SINGLE_CELL_ARRAY_WITH_OFFSETS.



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