2015-01-22T22:53:29.002+0800 [conn73]           Index Build: 109022400/258070991        42%
2015-01-22T22:53:39.187+0800 [conn73]           Index Build: 109149600/258070991        42%
2015-01-22T22:53:42.000+0800 [conn73]           Index Build: 109261800/258070991        42%
2015-01-22T22:53:52.411+0800 [conn73] Assertion: 16818:error opening file "data/_tmp/extsort.509": errno:24 Too many open files
2015-01-22T22:53:56.758+0800 [conn73] mongod.exe  ...\src\mongo\util\stacktrace.cpp(169)                     mongo::printStackTrace+0x43
2015-01-22T22:53:56.758+0800 [conn73] mongod.exe  ...\src\mongo\util\log.cpp(127)                            mongo::logContext+0x9c
2015-01-22T22:53:56.758+0800 [conn73] mongod.exe  ...\src\mongo\util\assert_util.cpp(183)                    mongo::msgasserted+0xfb
2015-01-22T22:53:56.758+0800 [conn73] mongod.exe  ...\src\mongo\util\assert_util.cpp(174)                    mongo::msgasserted+0x13
2015-01-22T22:53:56.758+0800 [conn73] mongod.exe  ...\src\mongo\db\sorter\sorter.cpp(801)                    mongo::SortedFileWriter<mongo::BSONObj,mongo::DiskLoc>::SortedFileWriter<mongo::BSONObj,mongo::DiskLoc>+0x43e
2015-01-22T22:53:56.758+0800 [conn73] mongod.exe  ...\src\mongo\db\sorter\sorter.cpp(465)                    mongo::sorter::NoLimitSorter<mongo::BSONObj,mongo::DiskLoc,mongo::`anonymous namespace'::ComparatorWithInterruptCheck>::spill+0x106
2015-01-22T22:53:56.775+0800 [conn73] mongod.exe  ...\src\mongo\db\sorter\sorter.cpp(410)                    mongo::sorter::NoLimitSorter<mongo::BSONObj,mongo::DiskLoc,mongo::`anonymous namespace'::ComparatorWithInterruptCheck>::add+0x83
2015-01-22T22:53:56.775+0800 [conn73] mongod.exe  ...\src\mongo\db\extsort.h(61)                             mongo::BSONObjExternalSorter::add+0x91
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\sort_phase_one.h(53)                      mongo::SortPhaseOne::addKeys+0x82
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\index\btree_based_access_method.cpp(347)  mongo::BtreeBulk::insert+0x8f
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\catalog\index_create.cpp(75)              mongo::addKeysToIndex+0x9a
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\catalog\index_create.cpp(128)             mongo::addExistingToIndex+0x57c
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\catalog\index_create.cpp(258)             mongo::buildAnIndex+0x62a
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\catalog\index_catalog.cpp(336)            mongo::IndexCatalog::createIndex+0x773
2015-01-22T22:53:56.798+0800 [conn73] mongod.exe  ...\src\mongo\db\commands\create_indexes.cpp(187)          mongo::CmdCreateIndex::run+0x12e9
2015-01-22T22:53:56.799+0800 [conn73] mongod.exe  ...\src\mongo\db\dbcommands.cpp(1385)                      mongo::_execCommand+0x5e
2015-01-22T22:53:56.799+0800 [conn73] mongod.exe  ...\src\mongo\db\dbcommands.cpp(1592)                      mongo::Command::execCommand+0xf09
2015-01-22T22:53:56.799+0800 [conn73] mongod.exe  ...\src\mongo\db\dbcommands.cpp(1724)                      mongo::_runCommands+0x4a7
2015-01-22T22:53:56.799+0800 [conn73] mongod.exe  ...\src\mongo\db\query\new_find.cpp(125)                   mongo::runCommands+0x41
2015-01-22T22:53:56.799+0800 [conn73] mongod.exe  ...\src\mongo\db\query\new_find.cpp(442)                   mongo::newRunQuery+0x49d
2015-01-22T22:53:56.799+0800 [conn73] osm.ways
2015-01-22T22:53:56.870+0800 [conn73] background addExistingToIndex exception error opening file "data/_tmp/extsort.509": errno:24 Too many open files
2015-01-22T22:53:57.931+0800 [conn73] index build failed. spec: { v: 1, key: { nodes: 1 }, name: "nodes_1", ns: "db.refs" } error: 16818 error opening file "data/_tmp/extsort.509": errno:24 Too many open files
2015-01-22T22:53:58.174+0800 [conn73] command db.$cmd command: createIndexes { createIndexes: "refs", indexes: [ { ns: "db.refs", name: "nodes_1", key: { nodes: 1 } } ] } keyUpdates:0 numYields:0 locks(micros) r:15839 w:6430126711 reslen:187 6430194ms
2015-01-22T22:53:58.234+0800 [conn65] killcursors  keyUpdates:0 numYields:0 locks(micros) r:352 3722031ms
2015-01-22T22:53:58.234+0800 [conn65] end connection 127.0.0.1:53138 (7 connections now open)
2015-01-22T22:53:58.356+0800 [conn66] SocketException handling request, closing client connection: 9001 socket exception [SEND_ERROR] server [127.0.0.1:53139]

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