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From shalom sagges <>
Subject Re: AbstractLocalAwareExecutorService Exception During Upgrade
Date Wed, 05 Jun 2019 21:22:48 GMT
If anyone has any idea on what might cause this issue, it'd be great.

I don't understand what could trigger this exception.
But what I really can't understand is why repairs started to run suddenly
There's no cron job running, no active repair process, no Validation
compactions, Reaper is turned off....  I see repair running only in the


On Wed, Jun 5, 2019 at 2:32 PM shalom sagges <> wrote:

> Hi All,
> I'm having a bad situation where after upgrading 2 nodes (binaries only)
> from 2.1.21 to 3.11.4 I'm getting a lot of warnings as follows:
> - Uncaught exception on thread
> Thread[ReadStage-5,5,main]: {}
> java.lang.ArrayIndexOutOfBoundsException: null
> I also see errors on repairs but no repair is running at all. I verified
> this with ps -ef command and nodetool compactionstats. The error I see is:
> Failed creating a merkle tree for [repair
> #a95498f0-8783-11e9-b065-81cdbc6bee08 on system_auth/users, []], /
> (see log for details)
> I saw repair errors on data tables as well.
> nodetool status shows all are UN and nodetool describecluster shows two
> schema versions as expected.
> After the warnings appeared, clients started to get timed out read/write
> queries.
> Restarting the 2 nodes solved the clients' connection issues, but the
> warnings are still being generated in the logs.
> Did anyone encounter such an issue and knows what this means?
> Thanks!

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