[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17019669#comment-17019669
]
Csaba Ringhofer commented on HIVE-21931:
Thanks, I am ok with HIVE-22554 as solution. I am closing this now, will
reopen if it doesn't work for me.
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17019534#comment-17019534
]
Laszlo Pinter commented on HIVE-21931:
--
[~csringhofer] It's a session property.
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17019518#comment-17019518
]
Csaba Ringhofer commented on HIVE-21931:
[~lpinter] yes, that sounds good. I still don't understand why do we need such
a large default though.
Is it a session property, or I have to set it at Sentry startup time?
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17019501#comment-17019501
]
Laszlo Pinter commented on HIVE-21931:
--
[~csringhofer] With HIVE-22554 you can configure the initial wait time out to a
much lower value, like 2000 millisec. Does that satisfies your needs?
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17019466#comment-17019466
]
Csaba Ringhofer commented on HIVE-21931:
[~Rajkumar Singh] Sorry, I missed your comment for some reason.
[~lpinter] Yes, I do run it with " and wait". This is needed for the tests, as
we specifically test if Impala can read a table after/during compaction.
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17019458#comment-17019458
]
Laszlo Pinter commented on HIVE-21931:
--
[~csringhofer] Did you run compaction in blocking mode?
HIVE-22554 provides a way to configure the wait time out.
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16907513#comment-16907513
]
Rajkumar Singh commented on HIVE-21931:
---
compaction should be affected by wait time
https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/ddl/table/storage/AlterTableCompactOperation.java#L102
only in case of blocking compaction command (alter table compact 'major'
and wait), if that the case then increasing wait time exp will be a good idea.
[~csringhofer] can you confirm that you are seeing this issue with the blocking
compaction call?
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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[jira] [Commented] (HIVE-21931) Slow compaction for tiny tables
[
https://issues.apache.org/jira/browse/HIVE-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16906334#comment-16906334
]
Peter Vary commented on HIVE-21931:
---
[https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/ddl/table/storage/AlterTableCompactOperation.java#L102]
We wait 5 minutes for starting the check. It would be good to do some exp
increasing timeout
> Slow compaction for tiny tables
> ---
>
> Key: HIVE-21931
> URL: https://issues.apache.org/jira/browse/HIVE-21931
> Project: Hive
> Issue Type: Bug
>Affects Versions: 3.1.0
>Reporter: Csaba Ringhofer
>Priority: Major
> Labels: compaction
>
> I observed the issue in Impala development environment when (major)
> compacting insert_only transactional tables in Hive. The compaction could
> take ~10 minutes even when it only had to merge 2 rows from 2 inserts. The
> actual work was done much earlier, the new base file was correctly written to
> HDFS, and Hive seemed to wait without doing any work.
> The compactions are started manually, hive.compactor.initiator.on=false to
> avoid "surprise compaction" during tests.
> {code}
> hive.compactor.abortedtxn.threshold=1000
> hive.compactor.check.interval=300s
> hive.compactor.cleaner.run.interval=5000ms
> hive.compactor.compact.insert.only=true
> hive.compactor.crud.query.based=false
> hive.compactor.delta.num.threshold=10
> hive.compactor.delta.pct.threshold=0.1
> hive.compactor.history.reaper.interval=2m
> hive.compactor.history.retention.attempted=2
> hive.compactor.history.retention.failed=3
> hive.compactor.history.retention.succeeded=3
> hive.compactor.initiator.failed.compacts.threshold=2
> hive.compactor.initiator.on=false
> hive.compactor.max.num.delta=500
> hive.compactor.worker.threads=4
> hive.compactor.worker.timeout=86400s
> {code}
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