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https://issues.apache.org/jira/browse/HBASE-18879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16201499#comment-16201499
 ] 

Hadoop QA commented on HBASE-18879:
-----------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
13s{color} | {color:blue} Docker mode activated. {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:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  1m 
45s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  5m 
45s{color} | {color:green} HBASE-18410 passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
55s{color} | {color:green} HBASE-18410 passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
53s{color} | {color:green} HBASE-18410 passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
37s{color} | {color:green} HBASE-18410 passed {color} |
| {color:green}+1{color} | {color:green} shadedjars {color} | {color:green}  5m 
32s{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 
13s{color} | {color:green} HBASE-18410 passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
49s{color} | {color:green} HBASE-18410 passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 
19s{color} | {color:blue} Maven dependency ordering for patch {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 
55s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
55s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
49s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 
25s{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} shadedjars {color} | {color:green}  3m 
58s{color} | {color:green} patch has no errors when building our shaded 
downstream artifacts. {color} |
| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green} 
40m  3s{color} | {color:green} Patch does not cause any errors with Hadoop 
2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 2.7.3 or 3.0.0-alpha4. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
53s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  2m 
37s{color} | {color:green} hbase-client in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}105m 
43s{color} | {color:green} hbase-server in the patch passed. {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}175m 59s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hbase:5d60123 |
| JIRA Issue | HBASE-18879 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12891613/HBASE-18879-HBASE-18410.v1.patch
 |
| Optional Tests |  asflicense  shadedjars  javac  javadoc  unit  findbugs  
hadoopcheck  hbaseanti  checkstyle  compile  |
| uname | Linux ce62835662d5 3.13.0-119-generic #166-Ubuntu SMP Wed May 3 
12:18:55 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | 
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build/component/dev-support/hbase-personality.sh
 |
| git revision | HBASE-18410 / f67fe4d |
| Default Java | 1.8.0_144 |
| findbugs | v3.1.0-RC3 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-HBASE-Build/9056/testReport/ |
| modules | C: hbase-client hbase-server U: . |
| Console output | 
https://builds.apache.org/job/PreCommit-HBASE-Build/9056/console |
| Powered by | Apache Yetus 0.4.0   http://yetus.apache.org |


This message was automatically generated.



> HBase FilterList cause KeyOnlyFilter not work
> ---------------------------------------------
>
>                 Key: HBASE-18879
>                 URL: https://issues.apache.org/jira/browse/HBASE-18879
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Filters
>    Affects Versions: 1.2.4
>         Environment: OS: Red Hat 4.4.7-11
> Hadoop: 2.6.4
> Hbase: 1.2.4
>            Reporter: ZHA_Moonlight
>            Assignee: Zheng Hu
>         Attachments: HBASE-18879-HBASE-18410.v1.patch, 
> HBASE-18879-HBASE-18410.v2.patch
>
>
> when use FilterList and KeyOnlyFilter together, if we put KeyOnlyFilter 
> before FilterList, the KeyOnlyFilter may not work, means it will also grab 
> the cell values:
> {code:java}
> List<Filter> filters = new ArrayList<Filter>();
>         Filter filter1 = new SingleColumnValueFilter(Bytes.toBytes("cf"), 
> Bytes.toBytes("column1"),
>                 CompareOp.EQUAL, Bytes.toBytes("value1"));
>         Filter filter2 = new SingleColumnValueFilter(Bytes.toBytes("cf"), 
> Bytes.toBytes("column1"),
>                 CompareOp.EQUAL, Bytes.toBytes("value2"));
>         filters.add(filter1);
>         filters.add(filter2);
>         FilterList filterListAll = new FilterList(Operator.MUST_PASS_ALL, 
>                 new KeyOnlyFilter(),
>                 new FilterList(Operator.MUST_PASS_ONE, filters));
> {code}
> use the above code as filter to scan a table, it will return the cells with 
> value instead of only return the key,  if we put KeyOnlyFilter after 
> FilterList as following, it works well.
>           
> {code:java}
> FilterList filterListAll = new FilterList(Operator.MUST_PASS_ALL,
>                 new FilterList(Operator.MUST_PASS_ONE, filters),
>                 new KeyOnlyFilter());
> {code}
> the cause should due to the following code at hbase-client  FilterList.java
> {code:java}
> @Override
>   
> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="SF_SWITCH_FALLTHROUGH",
>     justification="Intentional")
>   public ReturnCode filterKeyValue(Cell v) throws IOException {
>     this.referenceKV = v;
>     // Accumulates successive transformation of every filter that includes 
> the Cell:
>     Cell transformed = v;
>     ReturnCode rc = operator == Operator.MUST_PASS_ONE?
>         ReturnCode.SKIP: ReturnCode.INCLUDE;
>     int listize = filters.size();
>     for (int i = 0; i < listize; i++) {
>       Filter filter = filters.get(i);
>       if (operator == Operator.MUST_PASS_ALL) {
>         if (filter.filterAllRemaining()) {
>           return ReturnCode.NEXT_ROW;
>         }
> LINE1      ReturnCode code = filter.filterKeyValue(v);{color}        
> switch (code) {
>         // Override INCLUDE and continue to evaluate.
>         case INCLUDE_AND_NEXT_COL:
>           rc = ReturnCode.INCLUDE_AND_NEXT_COL; // FindBugs 
> SF_SWITCH_FALLTHROUGH
>         case INCLUDE:
> LINE2          transformed = filter.transformCell(transformed);{color}        
>   
> continue;
>         case SEEK_NEXT_USING_HINT:
>           seekHintFilter = filter;
>           return code;
>         default:
>           return code;
>         }
>       }
> {code}
> notice the “LINE1”,"LINE2" , first line is a recursive invocation, it will 
> assign a Cell results to the FilterList.transformedKV(we call it A), the 
> results is from the FilterList with 2 SingleColumnValueFilter, so  A with 
> contains the cell value, while the second line with return  A to the var 
> transformed.
> back to the following loop, we can see the FilterList return results is var 
> "transformed " which will override in each loop, so the value is determined 
> by the last filter, so the order of KeyOnlyFilter will impact the results.
> {code:java}
>  Cell transformed = v;
>     ReturnCode rc = operator == Operator.MUST_PASS_ONE?
>         ReturnCode.SKIP: ReturnCode.INCLUDE;
>     int listize = filters.size();
>     for (int i = 0; i < listize; i++) {
>       Filter filter = filters.get(i);
>       if (operator == Operator.MUST_PASS_ALL) {
>         if (filter.filterAllRemaining()) {
>           return ReturnCode.NEXT_ROW;
>         }
>         ReturnCode code = filter.filterKeyValue(v);
>         switch (code) {
>         // Override INCLUDE and continue to evaluate.
>         case INCLUDE_AND_NEXT_COL:
>           rc = ReturnCode.INCLUDE_AND_NEXT_COL; // FindBugs 
> SF_SWITCH_FALLTHROUGH
>         case INCLUDE:
>           transformed = filter.transformCell(transformed);
>           continue;
>         case SEEK_NEXT_USING_HINT:
>           seekHintFilter = filter;
>           return code;
>         default:
>           return code;
>         }
>       
> {code}



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