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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: 3.0.0-rc8
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Component/s: Storage
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Fully Compatible
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ALL
Tried to set wiredTigerEngineRuntimeConfig parameter to adjust eviction threads to 8 on a secondary server which was running under some load. Will work on a more controlled repro.
Server came up afterwards without issue.
copy/paste of shell:
[jmorales@mms-db-2.ny1 ~/queues.20150214.wt.secondary/eviction-threads-8]$ /var/lib/mongodb-mms-automation/mongodb-linux-x86_64-3.0.0-rc9-pre-2/bin/mongo --port 27800
MongoDB shell version: 3.0.0-rc9-pre-
connecting to: 127.0.0.1:27800/test
queues:SECONDARY> db.adminCommand({setParameter:1, wiredTigerEngineRuntimeConfig:"eviction=(threads_max=8)"})
2015-02-15T00:03:45.238+0000 I NETWORK DBClientCursor::init call() failed
2015-02-15T00:03:45.247+0000 E QUERY Error: error doing query: failed
at DBQuery._exec (src/mongo/shell/query.js:83:36)
at DBQuery.hasNext (src/mongo/shell/query.js:240:10)
at DBCollection.findOne (src/mongo/shell/collection.js:186:19)
at DB.runCommand (src/mongo/shell/db.js:58:41)
at DB.adminCommand (src/mongo/shell/db.js:66:41)
at (shell):1:4 at src/mongo/shell/query.js:83
mongod log:
2015-02-15T00:03:34.192+0000 I STORAGE [conn8644] Reconfiguring WiredTiger storage engine with config string: "eviction=(threads_max=8)"
2015-02-15T00:03:35.041+0000 I COMMAND [conn8596] command local.$cmd command: collStats { collStats: "oplog.rs", scale: undefined } keyUpdates:0 writeConflicts:0 numYields:0 reslen:4351 locks:{} 325ms
2015-02-15T00:03:36.410+0000 I COMMAND [conn8596] command local.$cmd command: collStats { collStats: "oplog.rs", scale: undefined } keyUpdates:0 writeConflicts:0 numYields:0 reslen:4351 locks:{} 366ms
2015-02-15T00:03:36.455+0000 I COMMAND [conn8498] command admin.$cmd command: serverStatus { serverStatus: 1, oplog: 1 } keyUpdates:0 writeConflicts:0 numYields:0 reslen:15355 locks:{} 176ms
2015-02-15T00:03:37.370+0000 F - Invalid access at address: 0
2015-02-15T00:03:37.377+0000 F - Got signal: 11 (Segmentation fault).
0xf41659 0xf40cd2 0xf4102e 0x3f6ea0f710 0x1324060 0x3f6ea079d1 0x3f6e6e8b6d
----- BEGIN BACKTRACE -----
{"backtrace":[{"b":"400000","o":"B41659"},{"b":"400000","o":"B40CD2"},{"b":"400000","o":"B4102E"},{"b":"3F6EA00000","o":"F710"},{"b":"400000","o":"F24060"},{"b":"3F6EA00000","o":"79D1"},{"b":"3F6E600000","o":"E8B6D"}],"processInfo":{ "mongodbVersion" : "3.0.0-rc9-pre-", "gitVersion" : "79492d9cc1885d74b31b5
fe24194dbc227096d6e", "uname" : { "sysname" : "Linux", "release" : "2.6.32-431.5.1.el6.x86_64", "version" : "#1 SMP Wed Feb 12 00:41:43 UTC 2014", "machine" : "x86_64" }, "somap" : [ { "elfType" : 2, "b" : "400000" }, { "b" : "7FFF340EF000", "elfType" : 3 }, { "path" : "/lib64/libpthread.so.0", "elfType" :
3 }, { "path" : "/lib64/librt.so.1", "elfType" : 3 }, { "path" : "/lib64/libdl.so.2", "elfType" : 3 }, { "path" : "/usr/lib64/libstdc++.so.6", "elfType" : 3 }, { "path" : "/lib64/libm.so.6", "elfType" : 3 }, { "path" : "/lib64/libgcc_s.so.1", "elfType" : 3 }, { "path" : "/lib64/libc.so.6", "elfType" : 3 },
{ "path" : "/lib64/ld-linux-x86-64.so.2", "elfType" : 3 } ] }}
mongod(_ZN5mongo15printStackTraceERSo+0x29) [0xf41659]
mongod(+0xB40CD2) [0xf40cd2]
mongod(+0xB4102E) [0xf4102e]
libpthread.so.0(+0xF710) [0x3f6ea0f710]
mongod(+0xF24060) [0x1324060]
libpthread.so.0(+0x79D1) [0x3f6ea079d1]
libc.so.6(clone+0x6D) [0x3f6e6e8b6d]
----- END BACKTRACE -----
2015-02-15T00:03:46.026+0000 I CONTROL ***** SERVER RESTARTED *****