на двух нодах
2018.03.20 22:37:38.616560 [ 78 ] <Error> ExternalDictionaries: Cannot update external dictionary 'meta_internal_id', leaving old version: Poco::Exception. Code: 1000, e.code() = 2027, e.displayText() = mysqlxx::BadQuery: Malformed packet (10.128.0.6:3306), e.what() = mysqlxx::BadQuery
2018.03.20 22:37:42.908631 [ 8813 ] <Error> BaseDaemon: ########################################
2018.03.20 22:37:42.908661 [ 8813 ] <Error> BaseDaemon: (from thread 60) Received signal Segmentation fault (11).
2018.03.20 22:37:42.908669 [ 8813 ] <Error> BaseDaemon: Address: NULL pointer.
2018.03.20 22:37:43.004288 [ 8813 ] <Error> BaseDaemon: 0. /usr/bin/clickhouse-server(tcmalloc::ThreadCache::ReleaseToCentralCache(tcmalloc::ThreadCache::FreeList*, unsigned long, int)+0x11b) [0x750a6fb]
2018.03.20 22:37:43.004313 [ 8813 ] <Error> BaseDaemon: 1. /usr/bin/clickhouse-server(tcmalloc::ThreadCache::Scavenge()+0x40) [0x750a820]
2018.03.20 22:37:43.004332 [ 8813 ] <Error> BaseDaemon: 2. /usr/bin/clickhouse-server(std::_Rb_tree<char const*, char const*, std::_Identity<char const*>, std::less<char const*>, std::allocator<char const*> >::_M_erase(std::_Rb_tree_node<char const*>*)+0x155) [0x6a13075]
2018.03.20 22:37:43.004362 [ 8813 ] <Error> BaseDaemon: 3. /usr/bin/clickhouse-server(DB::IParserBase::parse(DB::TokenIterator&, std::shared_ptr<DB::IAST>&, DB::Expected&)+0x14e) [0x6c3056e]
2018.03.20 22:37:43.004370 [ 8813 ] <Error> BaseDaemon: 4. /usr/bin/clickhouse-server(DB::ParserSubquery::parseImpl(DB::TokenIterator&, std::shared_ptr<DB::IAST>&, DB::Expected&)+0xa8) [0x6c562c8]
2018.03.20 22:37:43.004379 [ 8813 ] <Error> BaseDaemon: 5. /usr/bin/clickhouse-server(DB::IParserBase::parse(DB::TokenIterator&, std::shared_ptr<DB::IAST>&, DB::Expected&)+0x1a6) [0x6c305c6]
Были ли запросы до падения или это обновление словаря по таймеру ? Что случилось с mysql - может его перезапускали?
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