Details
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Bug
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Resolution: Duplicate
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Critical
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None
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6.5.0
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6.5.0-3894
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Triaged
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No
Description
Separated out from MB-35332, the snapshot range invariant is broken and results in an abort of memcached on node .104.203 after the "main" crash in MB-35332:
2019-07-30T01:59:41.127509-07:00 CRITICAL *** Fatal error encountered during exception handling ***
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2019-07-30T01:59:41.127578-07:00 CRITICAL Caught unhandled std::exception-derived exception. what(): snapshot_range_t(126,0) requires start <= end
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...
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2019-07-30T01:59:41.187086-07:00 CRITICAL Breakpad caught a crash (Couchbase version 6.5.0-3894). Writing crash dump to /opt/couchbase/var/lib/couchbase/crash/02fc502b-3f3f-7886-0abb7d7a-5fa5a08b.dmp before terminating.
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2019-07-30T01:59:41.187113-07:00 CRITICAL Stack backtrace of crashed thread:
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2019-07-30T01:59:41.187313-07:00 CRITICAL /opt/couchbase/bin/memcached() [0x400000+0x133d50]
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2019-07-30T01:59:41.187336-07:00 CRITICAL /opt/couchbase/bin/memcached(_ZN15google_breakpad16ExceptionHandler12GenerateDumpEPNS0_12CrashContextE+0x3ce) [0x400000+0x14b28e]
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2019-07-30T01:59:41.187357-07:00 CRITICAL /opt/couchbase/bin/memcached(_ZN15google_breakpad16ExceptionHandler13SignalHandlerEiP9siginfo_tPv+0x94) [0x400000+0x14b5a4]
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2019-07-30T01:59:41.187368-07:00 CRITICAL /lib64/libpthread.so.0() [0x7f24b9e03000+0xf100]
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2019-07-30T01:59:41.187405-07:00 CRITICAL /lib64/libc.so.6(gsignal+0x37) [0x7f24b9a42000+0x355f7]
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2019-07-30T01:59:41.187441-07:00 CRITICAL /lib64/libc.so.6(abort+0x148) [0x7f24b9a42000+0x36ce8]
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2019-07-30T01:59:41.187490-07:00 CRITICAL /opt/couchbase/bin/../lib/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x125) [0x7f24ba538000+0x91195]
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2019-07-30T01:59:41.187525-07:00 CRITICAL /opt/couchbase/bin/memcached() [0x400000+0x146d6d]
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2019-07-30T01:59:41.187577-07:00 CRITICAL /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f24ba538000+0x8ef86]
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2019-07-30T01:59:41.187622-07:00 CRITICAL /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f24ba538000+0x8efd1]
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2019-07-30T01:59:41.187673-07:00 CRITICAL /opt/couchbase/bin/../lib/libstdc++.so.6() [0x7f24ba538000+0x8f213]
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2019-07-30T01:59:41.187705-07:00 CRITICAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f24b5367000+0x70a22]
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2019-07-30T01:59:41.187724-07:00 CRITICAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f24b5367000+0xee86b]
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2019-07-30T01:59:41.187743-07:00 CRITICAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f24b5367000+0x13cba5]
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2019-07-30T01:59:41.187762-07:00 CRITICAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f24b5367000+0x13d06d]
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2019-07-30T01:59:41.187780-07:00 CRITICAL /opt/couchbase/bin/../lib/../lib/ep.so() [0x7f24b5367000+0x13644f]
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2019-07-30T01:59:41.187788-07:00 CRITICAL /opt/couchbase/bin/../lib/libplatform_so.so.0.1.0() [0x7f24bc3d3000+0x8f27]
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2019-07-30T01:59:41.187797-07:00 CRITICAL /lib64/libpthread.so.0() [0x7f24b9e03000+0x7dc5]
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2019-07-30T01:59:41.187846-07:00 CRITICAL /lib64/libc.so.6(clone+0x6d) [0x7f24b9a42000+0xf621d]
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After this crash, the subsequent restart hits the same issue again (and again...):
2019-07-30T01:59:46.010598-07:00 CRITICAL Caught unhandled std::exception-derived exception. what(): snapshot_range_t(126,0) requires start <= end
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2019-07-30T01:59:46.074329-07:00 CRITICAL Breakpad caught a crash (Couchbase version 6.5.0-3894). Writing crash dump to /opt/couchbase/var/lib/couchbase/crash/6d194160-7cbe-ab2d-35f2fbe5-61662911.dmp before terminating.
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...
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2019-07-30T01:59:57.490175-07:00 CRITICAL Caught unhandled std::exception-derived exception. what(): snapshot_range_t(126,0) requires start <= end
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2019-07-30T01:59:57.553201-07:00 CRITICAL Breakpad caught a crash (Couchbase version 6.5.0-3894). Writing crash dump to /opt/couchbase/var/lib/couchbase/crash/5c8a056f-162a-0bd4-324e5d1a-2e2db4f2.dmp before terminating.
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...
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