我的本地MySQL服务器暂时closures，原因不明

我的本地MySQL服务器5.5.38（在CentOS 6.5上）已经暂时closures了，mysql日志文件被填充了这样的细节：

This could be because you hit a bug. It is also possible that this binary or one of the libraries it was linked against is corrupt, improperly built, or misconfigured. This error can also be caused by malfunctioning hardware. We will try our best to scrape up some info that will hopefully help diagnose the problem, but since we have already crashed, something is definitely wrong and this may fail. key_buffer_size=8388608 read_buffer_size=131072 max_used_connections=44 max_threads=151 thread_count=15 connection_count=15 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 338508 K bytes of memory Hope that's ok; if not, decrease some variables in the equation. Thread pointer: 0x35accd0 Attempting backtrace. You can use the following information to find out where mysqld died. If you see no messages after this, something went terribly wrong... stack_bottom = 7f2514201d98 thread_stack 0x40000 /usr/libexec/mysqld(my_print_stacktrace+0x2e)[0x78b76e] /usr/libexec/mysqld(handle_fatal_signal+0x493)[0x674483] /lib64/libpthread.so.0[0x356b40f710] /lib64/libc.so.6(gsignal+0x35)[0x356b032925] /lib64/libc.so.6(abort+0x175)[0x356b034105] /usr/libexec/mysqld[0x833550] /usr/libexec/mysqld[0x833759] /usr/libexec/mysqld[0x838537] /usr/libexec/mysqld[0x816922] /usr/libexec/mysqld[0x81720a] /usr/libexec/mysqld[0x80c1d5] /usr/libexec/mysqld[0x7ea934] /usr/libexec/mysqld[0x7eaa76] /usr/libexec/mysqld[0x81ff3b] /usr/libexec/mysqld[0x82583e] /usr/libexec/mysqld[0x7a01ae] /usr/libexec/mysqld(_ZN7handler7ha_openEP5TABLEPKcii+0x3d)[0x676a9d] /usr/libexec/mysqld(_Z21open_table_from_shareP3THDP11TABLE_SHAREPKcjjjP5TABLEb+0x537)[0x5f6837] /usr/libexec/mysqld(_Z10open_tableP3THDP10TABLE_LISTP11st_mem_rootP18Open_table_context+0xc43) [0x5519e3] /usr/libexec/mysqld(_Z21open_table_from_shareP3THDP11TABLE_SHAREPKcjjjP5TABLEb+0x537)[0x5f6837] /usr/libexec/mysqld(_Z10open_tableP3THDP10TABLE_LISTP11st_mem_rootP18Open_table_context+0xc43) [0x5519e3] /usr/libexec/mysqld(_Z11open_tablesP3THDPP10TABLE_LISTPjjP19Prelocking_strategy+0x3ea)[0x5525da] /usr/libexec/mysqld(_Z30open_normal_and_derived_tablesP3THDP10TABLE_LISTj+0x4b)[0x552efb] /usr/libexec/mysqld[0x5c5fb7] /usr/libexec/mysqld(_Z14get_all_tablesP3THDP10TABLE_LISTP4Item+0x6e7)[0x5d0987] /usr/libexec/mysqld(_Z24get_schema_tables_resultP4JOIN23enum_schema_table_state+0x22e)[0x5c141e] /usr/libexec/mysqld(_ZN4JOIN4execEv+0x4f5)[0x5bc2a5] /usr/libexec/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x162)[0x5bdff2] /usr/libexec/mysqld(_Z13handle_selectP3THDP3LEXP13select_resultm+0x17c)[0x5bea7c] /usr/libexec/mysqld[0x57e3e7] /usr/libexec/mysqld(_Z21mysql_execute_commandP3THD+0x206b)[0x583beb] /usr/libexec/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x1bb)[0x58634b] /usr/libexec/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0x1c4d)[0x58874d] /usr/libexec/mysqld(_Z24do_handle_one_connectionP3THD+0xd2)[0x619132] /usr/libexec/mysqld(handle_one_connection+0x50)[0x619240] /lib64/libpthread.so.0[0x356b4079d1] /lib64/libc.so.6(clone+0x6d)[0x356b0e8b5d] Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query (7f24d0ea7440): is an invalid pointer Connection ID (thread ID): 431546 Status: NOT_KILLED 

我通过清除ib_logfile0和ib_logfile1来解决问题，并将/ var / lib / mysql的所有者recursion地更改为mysql：mysql。 有人能解释我发生了什么事吗？