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new 24631915ed [bugfix] fix correctness for vectorized compaction (#9773)
24631915ed is described below
commit 24631915edc605c8280792b0626ac3e689581612
Author: Gabriel <[email protected]>
AuthorDate: Thu May 26 15:05:50 2022 +0800
[bugfix] fix correctness for vectorized compaction (#9773)
---
be/src/olap/rowset/segment_v2/segment_writer.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/be/src/olap/rowset/segment_v2/segment_writer.cpp
b/be/src/olap/rowset/segment_v2/segment_writer.cpp
index 707e152902..4db2549683 100644
--- a/be/src/olap/rowset/segment_v2/segment_writer.cpp
+++ b/be/src/olap/rowset/segment_v2/segment_writer.cpp
@@ -118,7 +118,11 @@ Status SegmentWriter::append_block(const
vectorized::Block* block, size_t row_po
// find all row pos for short key indexes
std::vector<size_t> short_key_pos;
- if (UNLIKELY(_short_key_row_pos == 0)) {
+ // We build a short key index every `_opts.num_rows_per_block` rows.
Specifically, we
+ // build a short key index using 1st rows for first block and
`_short_key_row_pos - _row_count`
+ // for next blocks.
+ // Ensure we build a short key index using 1st rows only for the first
block (ISSUE-9766).
+ if (UNLIKELY(_short_key_row_pos == 0 && _row_count == 0)) {
short_key_pos.push_back(0);
}
while (_short_key_row_pos + _opts.num_rows_per_block < _row_count +
num_rows) {
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