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https://issues.apache.org/jira/browse/SPARK-3889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Davidson updated SPARK-3889:
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Comment: was deleted
(was: The only place we memory map in 1.1 is this method:
https://github.com/apache/spark/blob/branch-1.1/core/src/main/scala/org/apache/spark/storage/DiskStore.scala#L106
This threshold is configurable with "spark.storage.memoryMapThreshold" -- we
upped the default from 2 KB to 2 MB in 1.2, which you could try here as well.)
> JVM dies with SIGBUS, resulting in ConnectionManager failed ACK
> ---------------------------------------------------------------
>
> Key: SPARK-3889
> URL: https://issues.apache.org/jira/browse/SPARK-3889
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.2.0
> Reporter: Aaron Davidson
> Assignee: Aaron Davidson
> Priority: Critical
> Fix For: 1.2.0
>
>
> Here's the first part of the core dump, possibly caused by a job which
> shuffles a lot of very small partitions.
> {code}
> #
> # A fatal error has been detected by the Java Runtime Environment:
> #
> # SIGBUS (0x7) at pc=0x00007fa5885fcdb0, pid=488, tid=140343502632704
> #
> # JRE version: 7.0_25-b30
> # Java VM: OpenJDK 64-Bit Server VM (23.7-b01 mixed mode linux-amd64
> compressed oops)
> # Problematic frame:
> # v ~StubRoutines::jbyte_disjoint_arraycopy
> #
> # Failed to write core dump. Core dumps have been disabled. To enable core
> dumping, try "ulimit -c unlimited" before starting Java again
> #
> # If you would like to submit a bug report, please include
> # instructions on how to reproduce the bug and visit:
> # https://bugs.launchpad.net/ubuntu/+source/openjdk-7/
> #
> --------------- T H R E A D ---------------
> Current thread (0x00007fa4b0631000): JavaThread "Executor task launch
> worker-170" daemon [_thread_in_Java, id=6783,
> stack(0x00007fa4448ef000,0x00007fa4449f0000)]
> siginfo:si_signo=SIGBUS: si_errno=0, si_code=2 (BUS_ADRERR),
> si_addr=0x00007fa428f79000
> {code}
> Here is the only useful content I can find related to JVM and SIGBUS from
> Google: https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=976664
> It appears it may be related to disposing byte buffers, which we do in the
> ConnectionManager -- we mmap shuffle files via ManagedBuffer and dispose of
> them in BufferMessage.
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