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new 49b8097 Fix the core of get_next in exchange node (#2505)
49b8097 is described below
commit 49b809749512a10bd1bf54fe8854ba164f4ea730
Author: EmmyMiao87 <522274...@qq.com>
AuthorDate: Thu Dec 19 16:40:33 2019 +0800
Fix the core of get_next in exchange node (#2505)
The _input_batch hasn't been initialized in exchange node.
The undefined behavior will cause that the BE wants to get the capacity of
input_batch before BE initialize it.
The issue is #2504
---
be/src/exec/exchange_node.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/be/src/exec/exchange_node.h b/be/src/exec/exchange_node.h
index 3a334b3..18df782 100644
--- a/be/src/exec/exchange_node.h
+++ b/be/src/exec/exchange_node.h
@@ -85,7 +85,7 @@ private:
// Only valid if _is_merging is false. (If _is_merging is true, GetNext()
is
// delegated to the receiver). Owned by the stream receiver.
// boost::scoped_ptr<RowBatch> _input_batch;
- RowBatch* _input_batch;
+ RowBatch* _input_batch = nullptr;
// Next row to copy from _input_batch. For non-merging exchanges,
_input_batch
// is retrieved directly from the sender queue in the stream recvr, and
rows from
@@ -119,4 +119,3 @@ private:
};
#endif
-
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