yiguolei commented on code in PR #21361:
URL: https://github.com/apache/doris/pull/21361#discussion_r1248372069
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be/src/vec/exec/join/process_hash_table_probe_impl.h:
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@@ -177,22 +177,51 @@ Status
ProcessHashTableProbe<JoinOpType>::do_process(HashTableType& hash_table_c
KeyGetter key_getter(probe_raw_ptrs, _join_node->_probe_key_sz, nullptr);
if (probe_index == 0) {
- size_t old_probe_keys_memory_usage = 0;
- if (_arena) {
- old_probe_keys_memory_usage = _arena->size();
+ if (!_arena) {
+ _arena.reset(new Arena());
Review Comment:
maybe we could not arena memory reuse? To avoid allocate memory too
frequently and many page fault.
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