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Posted to reviews@spark.apache.org by aarondav <gi...@git.apache.org> on 2014/10/13 20:21:03 UTC
[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
GitHub user aarondav opened a pull request:
https://github.com/apache/spark/pull/2784
[SPARK-3923] Decrease Akka heartbeat interval below heartbeat pause
Something about the 2.3.4 upgrade seems to have made the issue manifest where all the services disconnect from each other after exactly 1000 seconds (which is the heartbeat interval). [This post](https://groups.google.com/forum/#!topic/akka-user/X3xzpTCbEFs) suggests that heartbeat pause should be less than heartbeat interval, and decreasing the interval from 1000s to below the 600s of the heartbeat pause seems to have rectified the issue. My current cluster has now exceeded 1400s of uptime without failure!
I do not know why this fixed it, because the threshold we have set for the failure detector is the exponent of a timeout, and 300 is extremely large. Perhaps the default failure detector changed in 2.3.4 and now ignores threshold.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/aarondav/spark fix-timeout
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2784.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2784
----
commit 9cb03722d689de4da6f46e45609b1e1c6d40d130
Author: Aaron Davidson <aa...@databricks.com>
Date: 2014-10-13T18:14:03Z
[SPARK-3923] Decrease Akka heartbeat interval below heartbeat pause
Something about the 2.3.4 upgrade seems to have made the issue manifest where
all the services disconnect from each other after exactly 1000 seconds (which
is the heartbeat interval). [This post](https://groups.google.com/forum/#!topic/akka-user/X3xzpTCbEFs)
suggests that heartbeat pause should be less than heartbeat interval, and decreasing
the interval from 1000s to below the 600s of the heartbeat pause seems to have
rectified the issue. My current cluster has now exceeded 1400s of uptime without
failure!
I do not know why this fixed it, because the threshold we have set for the
failure detector is the exponent of a timeout, and 300 is extremely large.
Perhaps the default failure detector changed in 2.3.4 and now ignores
threshold.
----
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59093134
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by aarondav <gi...@git.apache.org>.
Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58955111
Jenkins, retest this please.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58940406
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[GitHub] spark pull request: [SPARK-3923] Increase Akka heartbeat pause abo...
Posted by andrewor14 <gi...@git.apache.org>.
Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59456682
I see, if a heartbeat is lost there is no way to recover if the wait time is less than the interval. This LGTM. I'm merging this.
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[GitHub] spark pull request: [SPARK-3923] Increase Akka heartbeat pause abo...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/spark/pull/2784
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by ScrapCodes <gi...@git.apache.org>.
Github user ScrapCodes commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59163981
Minor: Your PR title looks misleading ! :)
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by aarondav <gi...@git.apache.org>.
Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58959176
Jenkins, retest this please.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by ScrapCodes <gi...@git.apache.org>.
Github user ScrapCodes commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59013875
Hey Aaron,
I increased the interval because its any way a "noise" !, We don't intend to use the akka's Failure Detector because we have our own heart beat tracking mechanism in place. If you reduce the time interval the number of System messages exchanged will rise. It may not be evident as in effect on performance or in perf benchmark etc, but these are unnecessary.
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[GitHub] spark pull request: [SPARK-3923] Increase Akka heartbeat pause abo...
Posted by vanzin <gi...@git.apache.org>.
Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59237808
"above below"?
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by witgo <gi...@git.apache.org>.
Github user witgo commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58989797
Sorry, I made a mistake.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58983487
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59082375
[QA tests have started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/21733/consoleFull) for PR 2784 at commit [`bd1151a`](https://github.com/apache/spark/commit/bd1151aba0196b169aef852ac918f07baef329f4).
* This patch merges cleanly.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58975667
[QA tests have started](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/366/consoleFull) for PR 2784 at commit [`3639220`](https://github.com/apache/spark/commit/363922064f7dab772149bc48a10e2585d5546852).
* This patch merges cleanly.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by aarondav <gi...@git.apache.org>.
Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58979366
Jenkins, retest this please.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58982693
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by aarondav <gi...@git.apache.org>.
Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59108111
@ScrapCodes increased pause by order of magnitude and reverted change to interval
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by witgo <gi...@git.apache.org>.
Github user witgo commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58989319
This configuration seems to be the value in milliseconds.
https://github.com/akka/akka/blob/v2.3.4/akka-remote/src/main/scala/akka/remote/DeadlineFailureDetector.scala
https://github.com/akka/akka/blob/v2.3.4/akka-remote/src/main/scala/akka/remote/PhiAccrualFailureDetector.scala
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by ScrapCodes <gi...@git.apache.org>.
Github user ScrapCodes commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59163637
Thanks, LGTM.
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[GitHub] spark pull request: [SPARK-3923] Increase Akka heartbeat pause abo...
Posted by aarondav <gi...@git.apache.org>.
Github user aarondav commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59237464
Updated, but I think we should always give PRs a name opposite to what they actually do. Keeps things interesting.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58988255
[QA tests have finished](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/375/consoleFull) for PR 2784 at commit [`9cb0372`](https://github.com/apache/spark/commit/9cb03722d689de4da6f46e45609b1e1c6d40d130).
* This patch **passes all tests**.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-59093121
[QA tests have finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/21733/consoleFull) for PR 2784 at commit [`bd1151a`](https://github.com/apache/spark/commit/bd1151aba0196b169aef852ac918f07baef329f4).
* This patch **passes all tests**.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58982688
[QA tests have finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/21711/consoleFull) for PR 2784 at commit [`3639220`](https://github.com/apache/spark/commit/363922064f7dab772149bc48a10e2585d5546852).
* This patch **fails PySpark unit tests**.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58979596
[QA tests have started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/21711/consoleFull) for PR 2784 at commit [`3639220`](https://github.com/apache/spark/commit/363922064f7dab772149bc48a10e2585d5546852).
* This patch merges cleanly.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58979299
[QA tests have finished](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/366/consoleFull) for PR 2784 at commit [`3639220`](https://github.com/apache/spark/commit/363922064f7dab772149bc48a10e2585d5546852).
* This patch **fails PySpark unit tests**.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58983485
[QA tests have finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/21712/consoleFull) for PR 2784 at commit [`9cb0372`](https://github.com/apache/spark/commit/9cb03722d689de4da6f46e45609b1e1c6d40d130).
* This patch **fails PySpark unit tests**.
* This patch merges cleanly.
* This patch adds no public classes.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by AmplabJenkins <gi...@git.apache.org>.
Github user AmplabJenkins commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58956772
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58980239
[QA tests have started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/21712/consoleFull) for PR 2784 at commit [`9cb0372`](https://github.com/apache/spark/commit/9cb03722d689de4da6f46e45609b1e1c6d40d130).
* This patch merges cleanly.
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[GitHub] spark pull request: [SPARK-3923] Decrease Akka heartbeat interval ...
Posted by SparkQA <gi...@git.apache.org>.
Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/2784#issuecomment-58984331
[QA tests have started](https://amplab.cs.berkeley.edu/jenkins/job/NewSparkPullRequestBuilder/375/consoleFull) for PR 2784 at commit [`9cb0372`](https://github.com/apache/spark/commit/9cb03722d689de4da6f46e45609b1e1c6d40d130).
* This patch merges cleanly.
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