#7  0x00007fc03660d192 in __GI___assert_fail (assertion=0x102c8d9 "pack_info != __null", file=0x102c888 "mysql-5.6-leveldb/storage/leveldb/ldb_datadic.cc", line=302, function=0x102ca80 "int LDBSE_KEYDEF::unpack_record(TABLE*, uchar*, const leveldb::Slice*, const leveldb::Slice*)") at assert.c:103 
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					#8  0x0000000000b0a58e in LDBSE_KEYDEF::unpack_record (this=0x7fc010015d10, table=0x7fc010015e20, buf=0x7fc0100151b8 "\371\002", packed_key=0x7fc0340a2580, unpack_info=0x7fc0340a2590) at mysql-5.6-leveldb/storage/leveldb/ldb_datadic.cc:302 
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					#9  0x0000000000b05e72 in ha_leveldb::index_read_map (this=0x7fc010014ec0, buf=0x7fc0100151b8 "\371\002", key=0x7fc0340a2830 "", keypart_map=3, find_flag=HA_READ_PREFIX_LAST_OR_PREV) at mysql-5.6-leveldb/storage/leveldb/ha_leveldb.cc:1415 
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					#10 0x000000000061a298 in handler::ha_index_read_map (this=0x7fc010014ec0, buf=0x7fc0100151b8 "\371\002", key=0x7fc0340a2830 "", keypart_map=3, find_flag=HA_READ_PREFIX_LAST_OR_PREV) at mysql-5.6-leveldb/sql/handler.cc:2668 
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					#11 0x000000000092dd7d in get_index_max_value (table=0x7fc010015e20, ref=0x7fc0340a2710, range_fl=3) at mysql-5.6-leveldb/sql/opt_sum.cc:207 
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					#12 0x000000000092e5e4 in opt_sum_query (thd=0x2787a10, tables=0x7fc010005380, all_fields=..., conds=0x7fc010005f98) at mysql-5.6-leveldb/sql/opt_sum.cc:422 
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					#13 0x0000000000962b27 in JOIN::optimize (this=0x7fc010006198) at mysql-5.6-leveldb/sql/sql_optimizer.cc:305 
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					#14 0x00000000007cbb34 in mysql_execute_select (thd=0x2787a10, select_lex=0x278a1f0, free_join=true) at mysql-5.6-leveldb/sql/sql_select.cc:1086 
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					#15 0x00000000007cbe6a in mysql_select (thd=0x2787a10, tables=0x7fc010005380, wild_num=0, fields=..., conds=0x7fc010005f98, order=0x278a3b8, group=0x278a2f0, having=0x0, select_options=2147748608, result=0x7fc010006170, unit=0x2789bb0, select_lex=0x278a1f0) at mysql-5.6-leveldb/sql/sql_select.cc:1221 
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					#16 0x00000000007c9fba in handle_select (thd=0x2787a10, result=0x7fc010006170, setup_tables_done_option=0) at mysql-5.6-leveldb/sql/sql_select.cc:110 
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					#17 0x00000000007a6782 in execute_sqlcom_select (thd=0x2787a10, all_tables=0x7fc010005380) at mysql-5.6-leveldb/sql/sql_parse.cc:4987 
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					#18 0x000000000079f5f4 in mysql_execute_command (thd=0x2787a10) at mysql-5.6-leveldb/sql/sql_parse.cc:2557 
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					#19 0x00000000007a8be7 in mysql_parse (thd=0x2787a10, rawbuf=0x7fc010004fd0 "SELECT MAX( pk ) FROM t1 WHERE i = 105 AND c = 'h'", length=50, parser_state=0x7fc0340a5110) at mysql-5.6-leveldb/sql/sql_parse.cc:6117 
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					#20 0x000000000079c9a3 in dispatch_command (command=COM_QUERY, thd=0x2787a10, packet=0x285af71 "SELECT MAX( pk ) FROM t1 WHERE i = 105 AND c = 'h'", packet_length=50) at mysql-5.6-leveldb/sql/sql_parse.cc:1312 
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					#21 0x000000000079bb66 in do_command (thd=0x2787a10) at mysql-5.6-leveldb/sql/sql_parse.cc:1036 
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					#22 0x0000000000766e09 in do_handle_one_connection (thd_arg=0x2787a10) at mysql-5.6-leveldb/sql/sql_connect.cc:969 
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					#23 0x000000000076682e in handle_one_connection (arg=0x2787a10) at mysql-5.6-leveldb/sql/sql_connect.cc:885 
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					#24 0x0000000000af6924 in pfs_spawn_thread (arg=0x26dcbf0) at mysql-5.6-leveldb/storage/perfschema/pfs.cc:1853 
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					#25 0x00007fc0371b6e9a in start_thread (arg=0x7fc0340a6700) at pthread_create.c:308 
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					#26 0x00007fc0366d1cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 
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