Confirmed on PS 5.5.27. Backtrace with intermediate backtraces: Breakpoint 1, row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c1cc0, buf=0x7fffb400f288 "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffc42edb88 "\003", key_len=767, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 2315 /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c: No such file or directory. #0 row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c1cc0, buf=0x7fffb400f288 "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffc42edb88 "\003", key_len=767, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 #1 0x0000000000850bfa in ha_innobase::records_in_range (this=0x7fffb400eea0, keynr=, min_key=0x7fffc42ebcf0, max_key=0x7fffc42ebd10) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/handler/ha_innodb.cc:8584 #2 0x0000000000765726 in check_quick_keys (param=param@entry=0x7fffc42eda30, idx=idx@entry=0, key_tree=key_tree@entry=0x7fffb40233c0, min_key=min_key@entry=0x7fffc42edb88 "\003", min_key_flag=min_key_flag@entry=0, min_keypart=min_keypart@entry=-1, max_key=max_key@entry=0x7fffc42eea86 "\003", max_key_flag=max_key_flag@entry=0, max_keypart=max_keypart@entry=-1) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:7807 #3 0x0000000000765963 in check_quick_select (param=param@entry=0x7fffc42eda30, idx=idx@entry=0, tree=0x7fffb40233c0, update_tbl_stats=update_tbl_stats@entry=true) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:7578 #4 0x0000000000765bd5 in get_key_scans_params (param=param@entry=0x7fffc42eda30, tree=tree@entry=0x7fffb4022e78, index_read_must_be_used=index_read_must_be_used@entry=false, update_tbl_stats=update_tbl_stats@entry=true, read_time=read_time@entry=1.8999999999999999, estimated_records=estimated_records@entry=0x7fffc42ec008) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:4966 #5 0x000000000076f63d in SQL_SELECT::test_quick_select (this=, thd=0x241d3c0, keys_to_use=..., prev_tables=, limit=, force_quick_range=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:2322 #6 0x00000000005d06cd in get_quick_record_count (limit=18446744073709551615, keys=0x7fffb4006148, table=0x7fffb400e5c0, select=0x7fffb40064d8, thd=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2641 #7 make_join_statistics (join=join@entry=0x7fffb4020de0, tables_arg=0x7fffb4004e38, conds=0x7fffb4005500, keyuse_array=keyuse_array@entry=0x7fffb4022398) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:3090 #8 0x00000000005d3777 in JOIN::optimize (this=this@entry=0x7fffb4020de0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:1082 #9 0x00000000005d6b47 in mysql_select (thd=thd@entry=0x241d3c0, rref_pointer_array=rref_pointer_array@entry=0x241f868, tables=0x7fffb4004e38, wild_num=1, fields=..., conds=, og_num=1, order=0x7fffb4005768, group=0x0, having=0x0, proc_param=0x0, select_options=select_options@entry=2147748608, result=result@entry=0x7fffb4005830, unit=unit@entry=0x241f070, select_lex=select_lex@entry=0x241f690) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2592 #10 0x00000000005dca9b in handle_select (thd=0x241d3c0, lex=0x241efb0, result=0x7fffb4005830, setup_tables_done_option=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:312 #11 0x000000000058f124 in execute_sqlcom_select (thd=thd@entry=0x241d3c0, all_tables=0x7fffb4004e38) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:4741 #12 0x00000000005954e8 in mysql_execute_command (thd=thd@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:2284 #13 0x000000000059c7ca in mysql_parse (thd=thd@entry=0x241d3c0, rawbuf=, length=68, parser_state=parser_state@entry=0x7fffc42f1760) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:5811 #14 0x000000000059d26a in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x241d3c0, packet=packet@entry=0x24a8111 "SELECT * FROM crash_test WHERE column1 = 'abc' ORDER BY column5 DESC", packet_length=packet_length@entry=68) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:1061 #15 0x000000000059e73f in do_command (thd=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:788 #16 0x0000000000648041 in do_handle_one_connection (thd_arg=thd_arg@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1484 #17 0x0000000000648137 in handle_one_connection (arg=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1391 #18 0x00007ffff7bc6e0f in start_thread () from /lib/libpthread.so.0 #19 0x00007ffff623504d in clone () from /lib/libc.so.6 Breakpoint 1, row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c1d70, buf=0x7fffb400fe8a "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffc42eea86 "\003", key_len=767, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 2315 in /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c #0 row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c1d70, buf=0x7fffb400fe8a "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffc42eea86 "\003", key_len=767, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 #1 0x0000000000850c60 in ha_innobase::records_in_range (this=0x7fffb400eea0, keynr=, min_key=0x7fffc42ebcf0, max_key=0x7fffc42ebd10) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/handler/ha_innodb.cc:8596 #2 0x0000000000765726 in check_quick_keys (param=param@entry=0x7fffc42eda30, idx=idx@entry=0, key_tree=key_tree@entry=0x7fffb40233c0, min_key=min_key@entry=0x7fffc42edb88 "\003", min_key_flag=min_key_flag@entry=0, min_keypart=min_keypart@entry=-1, max_key=max_key@entry=0x7fffc42eea86 "\003", max_key_flag=max_key_flag@entry=0, max_keypart=max_keypart@entry=-1) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:7807 #3 0x0000000000765963 in check_quick_select (param=param@entry=0x7fffc42eda30, idx=idx@entry=0, tree=0x7fffb40233c0, update_tbl_stats=update_tbl_stats@entry=true) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:7578 #4 0x0000000000765bd5 in get_key_scans_params (param=param@entry=0x7fffc42eda30, tree=tree@entry=0x7fffb4022e78, index_read_must_be_used=index_read_must_be_used@entry=false, update_tbl_stats=update_tbl_stats@entry=true, read_time=read_time@entry=1.8999999999999999, estimated_records=estimated_records@entry=0x7fffc42ec008) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:4966 #5 0x000000000076f63d in SQL_SELECT::test_quick_select (this=, thd=0x241d3c0, keys_to_use=..., prev_tables=, limit=, force_quick_range=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:2322 #6 0x00000000005d06cd in get_quick_record_count (limit=18446744073709551615, keys=0x7fffb4006148, table=0x7fffb400e5c0, select=0x7fffb40064d8, thd=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2641 #7 make_join_statistics (join=join@entry=0x7fffb4020de0, tables_arg=0x7fffb4004e38, conds=0x7fffb4005500, keyuse_array=keyuse_array@entry=0x7fffb4022398) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:3090 #8 0x00000000005d3777 in JOIN::optimize (this=this@entry=0x7fffb4020de0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:1082 #9 0x00000000005d6b47 in mysql_select (thd=thd@entry=0x241d3c0, rref_pointer_array=rref_pointer_array@entry=0x241f868, tables=0x7fffb4004e38, wild_num=1, fields=..., conds=, og_num=1, order=0x7fffb4005768, group=0x0, having=0x0, proc_param=0x0, select_options=select_options@entry=2147748608, result=result@entry=0x7fffb4005830, unit=unit@entry=0x241f070, select_lex=select_lex@entry=0x241f690) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2592 #10 0x00000000005dca9b in handle_select (thd=0x241d3c0, lex=0x241efb0, result=0x7fffb4005830, setup_tables_done_option=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:312 #11 0x000000000058f124 in execute_sqlcom_select (thd=thd@entry=0x241d3c0, all_tables=0x7fffb4004e38) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:4741 #12 0x00000000005954e8 in mysql_execute_command (thd=thd@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:2284 #13 0x000000000059c7ca in mysql_parse (thd=thd@entry=0x241d3c0, rawbuf=, length=68, parser_state=parser_state@entry=0x7fffc42f1760) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:5811 #14 0x000000000059d26a in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x241d3c0, packet=packet@entry=0x24a8111 "SELECT * FROM crash_test WHERE column1 = 'abc' ORDER BY column5 DESC", packet_length=packet_length@entry=68) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:1061 #15 0x000000000059e73f in do_command (thd=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:788 #16 0x0000000000648041 in do_handle_one_connection (thd_arg=thd_arg@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1484 #17 0x0000000000648137 in handle_one_connection (arg=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1391 #18 0x00007ffff7bc6e0f in start_thread () from /lib/libpthread.so.0 #19 0x00007ffff623504d in clone () from /lib/libc.so.6 Breakpoint 1, row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c23e0, buf=0x7fffb400f288 "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffb4022550 "\003", key_len=767, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 2315 in /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c #0 row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c23e0, buf=0x7fffb400f288 "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffb4022550 "\003", key_len=767, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 #1 0x0000000000847c4a in ha_innobase::index_read (this=0x7fffb400eea0, buf=0x7fffb4010ad0 "\003", key_ptr=0x7fffb4022550 "\003", key_len=767, find_flag=HA_READ_KEY_OR_NEXT) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/handler/ha_innodb.cc:6634 #2 0x00000000006b6673 in handler::index_read_map (this=0x7fffb400eea0, buf=0x7fffb4010ad0 "\003", key=0x7fffb4022550 "\003", keypart_map=, find_flag=HA_READ_KEY_OR_NEXT) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/handler.h:1645 #3 0x00000000006b526c in handler::read_range_first (this=0x7fffb400eea0, start_key=0x7fffb401c4e0, end_key=0x7fffb401c500, eq_range_arg=, sorted=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/handler.cc:4857 #4 0x00000000006adb4a in handler::read_multi_range_first (this=0x7fffb400eea0, found_range_p=0x7fffc42ef728, ranges=, range_count=1, sorted=, buffer=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/handler.cc:4731 #5 0x000000000075eecc in QUICK_RANGE_SELECT::get_next (this=0x7fffb400b540) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/opt_range.cc:8711 #6 0x00000000006ab421 in find_all_keys (tempfile=0x7fffc42ef9a0, buffpek_pointers=0x7fffc42efac0, sort_keys=0x7fffb4025da0, select=0x7fffb4022b50, param=0x7fffc42ef920) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/filesort.cc:600 #7 filesort (thd=0x241d3c0, table=0x7fffb400e5c0, sortorder=0x7fffb400eea0, s_length=0, select=0x7fffb4022b50, max_rows=18446744069414584321, sort_positions=false, examined_rows=0x7fffc42f0078) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/filesort.cc:247 #8 0x00000000005cb7fb in create_sort_index (thd=0x241d3c0, join=join@entry=0x7fffb4020de0, order=, filesort_limit=18446744073709551615, select_limit=18446744073709551615, is_order_by=false) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:14190 #9 0x00000000005dc2c2 in JOIN::exec (this=0x7fffb4020de0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2367 #10 0x00000000005d6b9c in mysql_select (thd=thd@entry=0x241d3c0, rref_pointer_array=rref_pointer_array@entry=0x241f868, tables=0x7fffb4004e38, wild_num=1, fields=..., conds=, og_num=1, order=0x7fffb4005768, group=0x0, having=0x0, proc_param=0x0, ---Type to continue, or q to quit--- select_options=select_options@entry=2147748608, result=result@entry=0x7fffb4005830, unit=unit@entry=0x241f070, select_lex=select_lex@entry=0x241f690) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2606 #11 0x00000000005dca9b in handle_select (thd=0x241d3c0, lex=0x241efb0, result=0x7fffb4005830, setup_tables_done_option=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:312 #12 0x000000000058f124 in execute_sqlcom_select (thd=thd@entry=0x241d3c0, all_tables=0x7fffb4004e38) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:4741 #13 0x00000000005954e8 in mysql_execute_command (thd=thd@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:2284 #14 0x000000000059c7ca in mysql_parse (thd=thd@entry=0x241d3c0, rawbuf=, length=68, parser_state=parser_state@entry=0x7fffc42f1760) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:5811 #15 0x000000000059d26a in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x241d3c0, packet=packet@entry=0x24a8111 "SELECT * FROM crash_test WHERE column1 = 'abc' ORDER BY column5 DESC", packet_length=packet_length@entry=68) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:1061 #16 0x000000000059e73f in do_command (thd=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:788 #17 0x0000000000648041 in do_handle_one_connection (thd_arg=thd_arg@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1484 #18 0x0000000000648137 in handle_one_connection (arg=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1391 #19 0x00007ffff7bc6e0f in start_thread () from /lib/libpthread.so.0 #20 0x00007ffff623504d in clone () from /lib/libc.so.6 Breakpoint 1, row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c23e0, buf=0x7fffb400f288 "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffb4235ab0 "\003", key_len=3076, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 2315 in /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c #0 row_sel_convert_mysql_key_to_innobase (tuple=0x7ffff41c23e0, buf=0x7fffb400f288 "", buf_len=3074, index=0x7ffff41c18c0, key_ptr=0x7fffb4235ab0 "\003", key_len=3076, trx=0x7ffff41c30c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/row/row0sel.c:2315 #1 0x0000000000847c4a in ha_innobase::index_read (this=0x7fffb400eea0, buf=0x7fffb4010ad0 "", key_ptr=0x7fffb4235ab0 "\003", key_len=3076, find_flag=HA_READ_KEY_EXACT) at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/handler/ha_innodb.cc:6634 #2 0x0000000000852697 in ha_innobase::rnd_pos (this=0x7fffb400eea0, buf=0x7fffb4010ad0 "", pos=0x7fffb4235ab0 "\003") at /media/Vone/Percona-Server-5.5.27-rel28.0/storage/innobase/handler/ha_innodb.cc:7166 #3 0x0000000000777299 in rr_from_pointers (info=0x7fffb40066c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/records.cc:529 #4 0x00000000005b8a71 in join_init_read_record (tab=0x7fffb4006640) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:12524 #5 0x00000000005c1205 in sub_select (join=join@entry=0x7fffb4020de0, join_tab=join_tab@entry=0x7fffb4006640, end_of_records=end_of_records@entry=false) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:11769 #6 0x00000000005ca6e8 in do_select (join=join@entry=0x7fffb4020de0, fields=fields@entry=0x241f7a0, table=table@entry=0x0, procedure=0x0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:11535 #7 0x00000000005dc412 in JOIN::exec (this=0x7fffb4020de0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2397 #8 0x00000000005d6b9c in mysql_select (thd=thd@entry=0x241d3c0, rref_pointer_array=rref_pointer_array@entry=0x241f868, tables=0x7fffb4004e38, wild_num=1, fields=..., conds=, og_num=1, order=0x7fffb4005768, group=0x0, having=0x0, proc_param=0x0, select_options=select_options@entry=2147748608, result=result@entry=0x7fffb4005830, unit=unit@entry=0x241f070, select_lex=select_lex@entry=0x241f690) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:2606 #9 0x00000000005dca9b in handle_select (thd=0x241d3c0, lex=0x241efb0, result=0x7fffb4005830, setup_tables_done_option=) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_select.cc:312 #10 0x000000000058f124 in execute_sqlcom_select (thd=thd@entry=0x241d3c0, all_tables=0x7fffb4004e38) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:4741 #11 0x00000000005954e8 in mysql_execute_command (thd=thd@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:2284 #12 0x000000000059c7ca in mysql_parse (thd=thd@entry=0x241d3c0, rawbuf=, length=68, parser_state=parser_state@entry=0x7fffc42f1760) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:5811 #13 0x000000000059d26a in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x241d3c0, packet=packet@entry=0x24a8111 "", packet_length=packet_length@entry=68) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:1061 #14 0x000000000059e73f in do_command (thd=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_parse.cc:788 #15 0x0000000000648041 in do_handle_one_connection (thd_arg=thd_arg@entry=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1484 #16 0x0000000000648137 in handle_one_connection (arg=0x241d3c0) at /media/Vone/Percona-Server-5.5.27-rel28.0/sql/sql_connect.cc:1391 #17 0x00007ffff7bc6e0f in start_thread () from /lib/libpthread.so.0 #18 0x00007ffff623504d in clone () from /lib/libc.so.6 120831 8:45:44 InnoDB: Assertion failure in thread 140736484812544 in file row0sel.c line 2441 InnoDB: Failing assertion: buf + data_len <= original_buf + buf_len InnoDB: We intentionally generate a memory trap. InnoDB: Submit a detailed bug report to http://bugs.mysql.com. InnoDB: If you get repeated assertion failures or crashes, even InnoDB: immediately after the mysqld startup, there may be InnoDB: corruption in the InnoDB tablespace. Please refer to InnoDB: http://dev.mysql.com/doc/refman/5.5/en/forcing-innodb-recovery.html InnoDB: about forcing recovery. ================ Full backtrace: http://sprunge.us/ehcj Also, COMPRESSED is not required (though that requires turning on innodb_file_format=Barracuda), even without that it crashes. From the backtrace, it looks like the key_len turns out to be 3076 bytes which is higher than MySQL limit of 3072 bytes, hence the asssertion fails.