that type of error report indicates a bug in the JVM. something that should *never* occur if the JVM is operating properly. corrupt cassandra data, auto-bootstrapping should never cause that kind of crash.

the SIGSEGV in the report indicates a segmentation fault (http://en.wikipedia.org/wiki/SIGSEGV), which again, should *never* happen if the JVM is operating properly. the real problem is inside the JVM, not with Cassandra

sorry to say, your best bet is to upgrade


On 10/13/2010 10:09 PM, Eric Czech wrote:
Thank you Todd. It seems strange though that this is only happening on one node and has never occurred on any others that are using the same JVM version. This node was just auto-bootstrapped so do you think this might be the result of some sort of data corruption? I would like to just decommission it but I'm not sure that that would fix the corrupted data (if it is actually corrupted). Do you know if compact or repair would detect bad data and disregard it? I'd like to try something like that if possible before just upgrading the JVM and potentially hiding the real problem.

On Wed, Oct 13, 2010 at 9:35 PM, B. Todd Burruss <bburr...@real.com <mailto:bburr...@real.com>> wrote:

    you should upgrade to the latest version of the JVM, 1.6.0_21

    there was a bug around 1.6.0_18 (or there abouts) that affected
    cassandra


    On 10/13/2010 07:55 PM, Eric Czech wrote:
    And this is the java version:

    java version "1.6.0_13"
    Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
    Java HotSpot(TM) 64-Bit Server VM (build 11.3-b02, mixed mode)

    and it's running on Ubuntu 9.04 (jaunty) linux
    4 cores
    4 GB RAM

    On Wed, Oct 13, 2010 at 8:30 PM, Eric Czech
    <e...@nextbigsound.com <mailto:e...@nextbigsound.com>> wrote:

        Yea there are several.  All of them have the same head and it
        looks like this:

        #
        # An unexpected error has been detected by Java Runtime
        Environment:
        #
        #  SIGSEGV (0xb) at pc=0x00007f140e588b32, pid=2359,
        tid=139720650078544
        #
        # Java VM: Java HotSpot(TM) 64-Bit Server VM (11.3-b02 mixed
        mode linux-amd64)
        # Problematic frame:
        # V  [libjvm.so+0x1d3b32]
        #
        # If you would like to submit a bug report, please visit:

        Have you ever seen that before?




        On Wed, Oct 13, 2010 at 7:52 PM, Jonathan Ellis
        <jbel...@gmail.com <mailto:jbel...@gmail.com>> wrote:

            is there a jvm crash log file?

            On Wed, Oct 13, 2010 at 8:43 PM, Eric Czech
            <e...@nextbigsound.com <mailto:e...@nextbigsound.com>> wrote:
            > Recently, cassandra has been crashing with no apparent
            error on one specific
            > node in my cluster.  Has anyone else ever had this
            happen and is there a way
            > to possible figure out what is going on other than
            looking at what is in the
            > stdout and system.log files?
            >
            > Thanks!
            >



            --
            Jonathan Ellis
            Project Chair, Apache Cassandra
            co-founder of Riptano, the source for professional
            Cassandra support
            http://riptano.com




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