[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15878511#comment-15878511 ] Hudson commented on HBASE-17608: FAILURE: Integrated in Jenkins build HBase-Trunk_matrix #2551 (See [https://builds.apache.org/job/HBase-Trunk_matrix/2551/]) HBASE-17608 Add suspend support for RawScanResultConsumer (zhangduo: rev f037f230fd5a0b6f28e68b02f47efeb4dbc22694) * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestRawAsyncTableScan.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncClientScanner.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncScanSingleRegionRpcRetryingCaller.java * (add) hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableScanRenewLease.java * (edit) hbase-endpoint/src/main/java/org/apache/hadoop/hbase/client/coprocessor/AsyncAggregationClient.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTable.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncRpcRetryingCallerFactory.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncTableImpl.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncTableResultScanner.java * (edit) hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawScanResultConsumer.java * (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableScanner.java * (edit) hbase-common/src/main/java/org/apache/hadoop/hbase/util/Threads.java * (add) hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableScannerCloseWhileSuspending.java > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch, HBASE-17608-v3.patch, HBASE-17608-v4.patch, > HBASE-17608-v5.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15878104#comment-15878104 ] Duo Zhang commented on HBASE-17608: --- Will commit shortly. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch, HBASE-17608-v3.patch, HBASE-17608-v4.patch, > HBASE-17608-v5.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[
https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15877969#comment-15877969
]
Hadoop QA commented on HBASE-17608:
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30m 9s {color} | {color:green} Patch does not cause any errors with Hadoop
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12853903/HBASE-17608-v5.patch |
| JIRA Issue | HBASE-17608 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux b8c3f3b43322 3.13.0-106-generic #153-Ubuntu SMP Tue Dec 6
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| Personality |
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|
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| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/5794/testReport/ |
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[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15877520#comment-15877520 ] stack commented on HBASE-17608: --- +1 ported from rb. Some minor nits to address on commit. Nice work [~Apache9] > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch, HBASE-17608-v3.patch, HBASE-17608-v4.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[
https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15871201#comment-15871201
]
Hadoop QA commented on HBASE-17608:
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27m 25s {color} | {color:green} Patch does not cause any errors with Hadoop
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12853194/HBASE-17608-v4.patch |
| JIRA Issue | HBASE-17608 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux 3124e44db6bd 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2
15:37:11 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
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| Personality |
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|
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| findbugs | v3.0.0 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/5746/testReport/ |
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[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15871094#comment-15871094 ] Duo Zhang commented on HBASE-17608: --- Ping [~stack]. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch, HBASE-17608-v3.patch, HBASE-17608-v4.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15869077#comment-15869077 ] Duo Zhang commented on HBASE-17608: --- [~stack] What do you think of the new comments? Does it help? Thanks. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch, HBASE-17608-v3.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[
https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15867712#comment-15867712
]
Hadoop QA commented on HBASE-17608:
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32m 37s {color} | {color:green} Patch does not cause any errors with Hadoop
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 113m 10s
{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 35s
{color} | {color:green} hbase-endpoint in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
57s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 180m 34s {color}
| {color:black} {color} |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=1.11.2 Server=1.11.2 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12852770/HBASE-17608-v3.patch |
| JIRA Issue | HBASE-17608 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux 43db90d96b22 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2
15:37:11 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build@2/component/dev-support/hbase-personality.sh
|
| git revision | master / 33e9a8c |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| javadoc |
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15865550#comment-15865550 ] Duo Zhang commented on HBASE-17608: --- Any other concerns sir? [~stack] This is also related HBASE-17595. With HBASE-17608 we will not stop the scan operation in AsyncTableResultScanner, so we do not need to deal with partial result in AsyncTableResultScanner which makes the logic much simpler. Thanks. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15862055#comment-15862055 ] Duo Zhang commented on HBASE-17608: --- And this one sir [~stack]. Thanks. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch, > HBASE-17608-v2.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[
https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15859132#comment-15859132
]
Hadoop QA commented on HBASE-17608:
---
| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 24s
{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 4 new or modified test
files. {color} |
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{color} | {color:blue} Maven dependency ordering for branch {color} |
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43s {color} | {color:green} master passed {color} |
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5s {color} | {color:green} the patch passed {color} |
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| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
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| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
24m 46s {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-alpha2. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 17s
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 84m 37s
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 31s
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52s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 136m 4s {color}
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|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12851787/HBASE-17608-v1.patch |
| JIRA Issue | HBASE-17608 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux 49fbeb9429a0 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12
13:48:03 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-HBASE-Build@2/component/dev-support/hbase-personality.sh
|
| git revision | master / b238901 |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/5641/testReport/ |
|
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[
https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15859118#comment-15859118
]
Hadoop QA commented on HBASE-17608:
---
| (/) *{color:green}+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: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 2 new or modified test
files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 22s
{color} | {color:blue} Maven dependency ordering for branch {color} |
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6s {color} | {color:green} master passed {color} |
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{color} | {color:green} master passed {color} |
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m
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28s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 1m 20s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 20s
{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 1m
16s {color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m
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| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
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| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
28m 23s {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-alpha2. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 4m
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 52s
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 20s
{color} | {color:green} hbase-client in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 88m 13s
{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 51s
{color} | {color:green} hbase-endpoint in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
55s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 146m 28s {color}
| {color:black} {color} |
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\\
|| Subsystem || Report/Notes ||
| Docker | Client=1.12.3 Server=1.12.3 Image:yetus/hbase:8d52d23 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12851785/HBASE-17608-v1.patch |
| JIRA Issue | HBASE-17608 |
| Optional Tests | asflicense javac javadoc unit findbugs hadoopcheck
hbaseanti checkstyle compile |
| uname | Linux 608842ea1962 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2
15:37:11 UTC 2016 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 | master / b238901 |
| Default Java | 1.8.0_121 |
| findbugs | v3.0.0 |
| Test Results |
https://builds.apache.org/job/PreCommit-HBASE-Build/5638/testReport/ |
|
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15859067#comment-15859067 ] stack commented on HBASE-17608: --- Thanks. That helps. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15859064#comment-15859064 ] Duo Zhang commented on HBASE-17608: --- Done sir. The problem is even if we bring the mvcc read point when reopening scanner, we could still miss some data because we do not leave an record in the scannerReadPoints at RS side so the data maybe reclaimed by compaction. So the proper way is to leave scanner open at RS side, i.e., suspend the scanner, not close the scanner. Thanks. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. > For example, you put 10 rows to the region, and open a scanner to scan it. > The scanner returns 5 rows at the first time and the cache is full, so it > closes the background scanner. And before you reopens the scanner to fetch > data, the remaining 5 rows has been deleted and a compaction makes them gone > for ever. Then after you reopen the scanner you can not see the remaining 5 > rows. > So here we should keep the scanner open at RS side to prevent the data below > the mvcc read point of this scanner being deleted. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15859059#comment-15859059 ] stack commented on HBASE-17608: --- Can you beef up the description some please [~Apache9]. I'm not sure I'm clear on this but: "...ow for the AsyncResultScanner, we can only close the scanner if we reach the cache size limit and open a new scanner later. This will breaks the region level consistency. ..." Thanks. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch, HBASE-17608-v1.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. We should just stop fetching data and leave the scanner > open at RS. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[
https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15857936#comment-15857936
]
Hadoop QA commented on HBASE-17608:
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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 15s
{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} |
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0s {color} | {color:green} The patch appears to include 4 new or modified test
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37s {color} | {color:green} master passed {color} |
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{color} | {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 10s
{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
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{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 1m 14s
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| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m
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| {color:green}+1{color} | {color:green} hadoopcheck {color} | {color:green}
24m 35s {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-alpha2. {color} |
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{color} | {color:green} hbase-common in the patch passed. {color} |
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| {color:green}+1{color} | {color:green} unit {color} | {color:green} 78m 57s
{color} | {color:green} hbase-server in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 1m 23s
{color} | {color:green} hbase-endpoint in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 1m
0s {color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 129m 41s {color}
| {color:black} {color} |
\\
\\
|| Reason || Tests ||
| FindBugs | module:hbase-client |
| | Inconsistent synchronization of
org.apache.hadoop.hbase.client.AsyncScanSingleRegionRpcRetryingCaller$ResumerImpl.numValidResults;
locked 50% of time Unsynchronized access at
AsyncScanSingleRegionRpcRetryingCaller.java:50% of time Unsynchronized access
at AsyncScanSingleRegionRpcRetryingCaller.java:[line 193] |
| | Inconsistent synchronization of
org.apache.hadoop.hbase.client.AsyncScanSingleRegionRpcRetryingCaller$ResumerImpl.resp;
locked 50% of time Unsynchronized access at
AsyncScanSingleRegionRpcRetryingCaller.java:50% of time Unsynchronized access
at AsyncScanSingleRegionRpcRetryingCaller.java:[line 193] |
| Failed
[jira] [Commented] (HBASE-17608) Add suspend support for RawScanResultConsumer
[ https://issues.apache.org/jira/browse/HBASE-17608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15857751#comment-15857751 ] Duo Zhang commented on HBASE-17608: --- [~stack] PTAL sir. I think this is the last necessary feature for the async client. Maybe we could revisit HBASE-16991 to find a propery API to get AsyncConnection, and start working on HBASE-17008 after this. Thanks. > Add suspend support for RawScanResultConsumer > - > > Key: HBASE-17608 > URL: https://issues.apache.org/jira/browse/HBASE-17608 > Project: HBase > Issue Type: Sub-task > Components: asyncclient, Client, scan >Affects Versions: 2.0.0 >Reporter: Duo Zhang >Assignee: Duo Zhang > Fix For: 2.0.0 > > Attachments: HBASE-17608.patch > > > Now for the AsyncResultScanner, we can only close the scanner if we reach the > cache size limit and open a new scanner later. This will breaks the region > level consistency. We should just stop fetching data and leave the scanner > open at RS. -- This message was sent by Atlassian JIRA (v6.3.15#6346)
