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Posted to dev@doris.apache.org by GitBox <gi...@apache.org> on 2019/04/01 04:04:51 UTC
[GitHub] [incubator-doris] kangkaisen opened a new issue #838:
CumulativeCompaction with HLL cause BE core dump
kangkaisen opened a new issue #838: CumulativeCompaction with HLL cause BE core dump
URL: https://github.com/apache/incubator-doris/issues/838
**Describe the bug**
```
(gdb) bt
#0 0x0000000000c577a0 in doris::HllSetResolver::fill_hash64_set (this=this@entry=0x7fe82693bf80, hash_set=0xb137889af84e6883)
at /home/kangkaisen/palo/be/src/olap/hll.cpp:139
#1 0x0000000000c587a8 in fill_hash64_set (hash_set=<optimized out>, this=0x7fe82693bf80)
at /home/kangkaisen/palo/be/src/olap/hll.cpp:91
#2 doris::HllSetHelper::fill_set (data=<optimized out>, context=0xd0eff248) at /home/kangkaisen/palo/be/src/olap/hll.cpp:217
#3 0x0000000000cb8f2c in aggregate (this=<optimized out>, src=<optimized out>, dest=<optimized out>)
at /home/kangkaisen/palo/be/src/olap/field.h:186
#4 aggregate (rhs=<optimized out>, lhs=0x7fe82693e8d0, cids=...) at /home/kangkaisen/palo/be/src/olap/row_cursor.h:53
#5 doris::Reader::_agg_key_next_row (this=0x7fe82693ea70, row_cursor=0x7fe82693e8d0, eof=<optimized out>)
at /home/kangkaisen/palo/be/src/olap/reader.cpp:400
#6 0x0000000000d2dfb3 in next_row_with_aggregation (eof=0x7fe82693e8bf, row_cursor=0x7fe82693e8d0, this=0x7fe82693ea70)
at /home/kangkaisen/palo/be/src/olap/reader.h:115
#7 doris::Merger::merge (this=this@entry=0x7fe826941580, olap_data_arr=..., merged_rows=merged_rows@entry=0x7fe826941540,
filted_rows=filted_rows@entry=0x7fe826941548) at /home/kangkaisen/palo/be/src/olap/merger.cpp:95
#8 0x0000000000d1940d in doris::CumulativeCompaction::_do_cumulative_compaction (this=this@entry=0x7fe8269466c0)
at /home/kangkaisen/palo/be/src/olap/cumulative_compaction.cpp:378
#9 0x0000000000d19f65 in doris::CumulativeCompaction::run (this=this@entry=0x7fe8269466c0)
at /home/kangkaisen/palo/be/src/olap/cumulative_compaction.cpp:152
#10 0x0000000000c5f766 in doris::OLAPEngine::perform_cumulative_compaction (this=this@entry=0x6659c00)
at /home/kangkaisen/palo/be/src/olap/olap_engine.cpp:1706
#11 0x0000000000c83307 in doris::OLAPEngine::_cumulative_compaction_thread_callback (this=0x6659c00, arg=arg@entry=0x0)
at /home/kangkaisen/palo/be/src/olap/olap_server.cpp:237
#12 0x0000000000c833af in operator() (__closure=<optimized out>) at /home/kangkaisen/palo/be/src/olap/olap_server.cpp:76
#13 __invoke_impl<void, doris::OLAPEngine::_start_bg_worker()::<lambda()> > (__f=...)
at /usr/local/include/c++/7.2.0/bits/invoke.h:60
```
The _set_type is `doris::HLL_DATA_EXPLICIT`, but `context.has_sparse_or_full` is true. **which is incompatible. So I think which should be a concurrent issue.**
```
(gdb) print resolver
$1 = {_buf_ref = 0x693aab4b "\001\001|\234\266/dd\372\016\001\001\364>\352\t\275\353\361@\001\001\364>\352\t\275\353\361@",
_buf_len = 10, _set_type = doris::HLL_DATA_EXPLICIT, _full_value_position = 0x0, _explicit_value = 0x693aab4d,
_explicit_num = 1 '\001', _sparse_map = {_M_t = {
_M_impl = {<std::allocator<std::_Rb_tree_node<std::pair<unsigned short const, unsigned char> > >> = {<__gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<unsigned short const, unsigned char> > >> = {<No data fields>}, <No data fields>}, <std::_Rb_tree_key_compare<std::less<unsigned short> >> = {
_M_key_compare = {<std::binary_function<unsigned short, unsigned short, bool>> = {<No data fields>}, <No data fields>}}, <std::_Rb_tree_header> = {_M_header = {_M_color = std::_S_red, _M_parent = 0x0, _M_left = 0x7fe82693bfb0,
_M_right = 0x7fe82693bfb0}, _M_node_count = 0}, <No data fields>}}},
_sparse_count = 0xcc4274 <doris::RowCursor::full_key_cmp(doris::RowCursor const&) const+148>}
(gdb) print *context
$3 = {has_value = true, has_sparse_or_full = true,
registers = "\000\000\200\001\000\204\005\065\000\003\000\020\200\003\000\000\000\031\026\200V\000\000\000\325\000\000\000\000\000\200\000\000\002\001 \364\001\001\001\000\304\000\001\000\216\002\001\001\001\000\000@\001\000\000\000\220\321\000\001\000\374\023DP\202\000\200\000\200\001\000\003\000K\266\002\002$\210\000\001\060\004\236\001\002\000\000\000\000%\000\000\000\000\021\000\001$\000\001\000\242\001 \000\004\001\000M\003\000\000\224\000\060\r+\000\000\001\003\001\000\017\037\000\020\000\ae(\000\004)\000\001\255)\000\000P# \364\000\024\001\374\000\001\001\000\000\062\273P\001\256\001\000\000\000\307\024\000\001\000\000\001\a\005\005\001\000\000\000\000\000\000\004\000\001`\004\001\364\000\000a\000\000\364\000\374\004\364\001"...,
hash64_set = 0xb137889af84e6883}
```
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