kangkaisen opened a new issue #1124: BE core when load_index URL: https://github.com/apache/incubator-doris/issues/1124 **Describe the bug** ``` *** Aborted at 1557246373 (unix time) try "date -d @1557246373" if you are using GNU date *** PC: @ 0xd2c20a doris::ShardedLRUCache::lookup() *** SIGSEGV (@0x0) received by PID 15309 (TID 0x7f9b8a9ae700) from PID 0; stack trace: *** @ 0x7f9b9562c2f0 (unknown) @ 0xd2c20a doris::ShardedLRUCache::lookup() @ 0xd669b4 doris::column_file::SegmentReader::_load_index() @ 0xd6b5dc doris::column_file::SegmentReader::init() @ 0xd4941a doris::column_file::ColumnData::_seek_to_block() @ 0xd4c263 doris::column_file::ColumnData::prepare_block_read() @ 0xcb7e48 doris::Reader::_attach_data_to_merge_set() @ 0xcbb136 doris::Reader::init() @ 0xd2deb2 doris::Merger::merge() @ 0xd1943d doris::CumulativeCompaction::_do_cumulative_compaction() @ 0xd19f95 doris::CumulativeCompaction::run() @ 0xc5f796 doris::OLAPEngine::perform_cumulative_compaction() @ 0xc83337 doris::OLAPEngine::_cumulative_compaction_thread_callback() @ 0xc833df _ZNSt6thread11_State_implINS_8_InvokerISt5tupleIJZN5doris10OLAPEngine16_start_bg_workerEvEUlvE3_EEEEE6_M_runEv @ 0x2526acf execute_native_thread_routine @ 0x7f9b953e1e25 start_thread @ 0x7f9b956f4bad __clone #0 0x0000000000d2c20a in _find_pointer (hash=2483700659, key=..., this=0x6fc6948) at /home/kangkaisen/palo/be/src/olap/lru_cache.cpp:122 #1 lookup (hash=<optimized out>, key=..., this=0x6fc6948) at /home/kangkaisen/palo/be/src/olap/lru_cache.cpp:83 #2 lookup (hash=<optimized out>, key=..., this=0x6fc6878) at /home/kangkaisen/palo/be/src/olap/lru_cache.cpp:239 #3 doris::ShardedLRUCache::lookup (this=0x6fc6000, key=...) at /home/kangkaisen/palo/be/src/olap/lru_cache.cpp:351 #4 0x0000000000d669b4 in doris::column_file::SegmentReader::_load_index (this=this@entry=0x228b07400, is_using_cache=is_using_cache@entry=false) at /home/kangkaisen/palo/be/src/olap/column_file/segment_reader.cpp:638 #5 0x0000000000d6b5dc in doris::column_file::SegmentReader::init (this=this@entry=0x228b07400, is_using_cache=<optimized out>) at /home/kangkaisen/palo/be/src/olap/column_file/segment_reader.cpp:232 #6 0x0000000000d4941a in doris::column_file::ColumnData::_seek_to_block (this=this@entry=0xee9ee600, block_pos=..., without_filter=without_filter@entry=false) at /home/kangkaisen/palo/be/src/olap/column_file/column_data.cpp:130 #7 0x0000000000d4c263 in doris::column_file::ColumnData::prepare_block_read (this=0xee9ee600, start_key=0x0, find_start_key=<optimized out>, end_key=0x0, find_end_key=<optimized out>, first_block=0x7f9b8a9807e0) at /home/kangkaisen/palo/be/src/olap/column_file/column_data.cpp:379 (gdb) p cache_handle_index $1 = 87 $2 = {_data = 0x7f9b8a9789c0 "/data8/olap/data/485/116765099/2133058311/116765099_6135_6135_6110004576278746592_0_0.datW", _size = 97} (gdb) p _length $11 = 262144 (gdb) p hash $7 = 2483700659 (gdb) p sizeof(key_buf) $21 = 1024 (gdb) p OLAP_LRU_CACHE_MAX_KEY_LENTH $22 = 1024 (gdb) p key_buf $23 = "/data8/olap/data/485/116765099/2133058311/116765099_6135_6135_6110004576278746592_0_0.datW\000\000\000\000\000\000\000\212\227\212\233\177\000\000\000\240;~\036\000\000\000/\000\000\000\000\000\000\000\003\000\000\000\000\000\000\000\200\264\227\212\233\177\000\000\353,\330\000\000\000\000\000\035\000\000\000\000\000\000\000;\000\000\000\000\000\000\000\200\264\227\212\233\177\000\000r,\330\000\000\000\000\000\n\000\000\000\000\000\000\000=\000\000\000\000\000\000\000&\000\000\000\000\000\000\000"... (gdb) p _file_handler $24 = {_fd = 8687, _wr_length = 0, _cache_threshold = 524288, _file_name = {static npos = 18446744073709551615, _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p = 0x47ab59e60 "/data8/olap/data/485/116765099/2133058311/116765099_6135_6135_6110004576278746592_0_0.dat"}, _M_string_length = 89, {_M_local_buf = "Y\000\000\000\000\000\000\000\004\000\000\000\000\000\000", _M_allocated_capacity = 89}}, _is_using_cache = true, _cache_handle = 0x7a52ca00} ```
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