Details
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Bug
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Status: Closed
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Major - P3
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Resolution: Done
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None
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None
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Platforms 2017-01-23
Description
I am using mongoreplay to playback production traffic, and it crashed with this trace.
[ec2-user@ip-10-2-0-98 ~]$ LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/media/ephemeral0/ ./mongoreplay play -p /media/ephemeral0/playback.bson --host mongodb://10.2.0.210:27017 --no-preprocess
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2016/12/08 01:57:35 Doing playback at 1.00x speed
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panic: runtime error: invalid memory address or nil pointer dereference
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[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x5c95a2]
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goroutine 1771 [running]:
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panic(0x73e620, 0xc4200140b0)
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/opt/go/src/runtime/panic.go:500 +0x1a1
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github.com/10gen/llmgo.(*MongoSocket).SimpleQuery.func1(0xb913a0, 0xc420014150, 0x0, 0x0)
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/data/mci/aec3fed01f1c23fbbb82149b78096a79/src/vendor/src/github.com/10gen/llmgo/socket.go:449 +0xc2
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github.com/10gen/llmgo.(*MongoSocket).kill(0xc421912b60, 0xb913a0, 0xc420014150, 0x1)
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/data/mci/aec3fed01f1c23fbbb82149b78096a79/src/vendor/src/github.com/10gen/llmgo/socket.go:431 +0x492
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github.com/10gen/llmgo.(*MongoSocket).readLoop(0xc421912b60)
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/data/mci/aec3fed01f1c23fbbb82149b78096a79/src/vendor/src/github.com/10gen/llmgo/socket.go:677 +0x13d2
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created by github.com/10gen/llmgo.NewSocket
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/data/mci/aec3fed01f1c23fbbb82149b78096a79/src/vendor/src/github.com/10gen/llmgo/socket.go:277 +0x278
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I was concern this may related to ulimit for fd, but it is set to 20k
[ec2-user@ip-10-2-0-98 ~]$ ulimit -n
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20000
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and on mongod, the number of connections peaked at 230
insert query update delete getmore command dirty used flushes vsize res qrw arw net_in net_out conn set repl time
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*0 *0 *0 *0 0 96|0 0.0% 80.0% 0 23.1G 22.2G 0|0 0|0 78.1k 80.4k 230 logkeeper-rs0 PRI Dec 8 01:58:32.216
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From stack, seems related to driver? The old mongotape build I tried works iirc.