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lgbo-ustc 2022-04-20 17:01:02 +08:00
parent 09bfcb0ded
commit 9e364912d8
1 changed files with 1 additions and 1 deletions
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src/Core/Settings.h
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@ -351,7 +351,7 @@ class IColumn;
M(UInt64, partial_merge_join_left_table_buffer_bytes, 0, "If not 0 group left table blocks in bigger ones for left-side table in partial merge join. It uses up to 2x of specified memory per joining thread.", 0) \
M(UInt64, partial_merge_join_rows_in_right_blocks, 65536, "Split right-hand joining data in blocks of specified size. It's a portion of data indexed by min-max values and possibly unloaded on disk.", 0) \
M(UInt64, join_on_disk_max_files_to_merge, 64, "For MergeJoin on disk set how much files it's allowed to sort simultaneously. Then this value bigger then more memory used and then less disk I/O needed. Minimum is 2.", 0) \
M(Bool, enable_parallel_hash_join, false, "Enable paralle join algorithm.", 0)\
M(Bool, enable_parallel_hash_join, false, "Enable parallel join algorithm.", 0)\
M(String, temporary_files_codec, "LZ4", "Set compression codec for temporary files (sort and join on disk). I.e. LZ4, NONE.", 0) \
\
M(UInt64, max_rows_to_transfer, 0, "Maximum size (in rows) of the transmitted external table obtained when the GLOBAL IN/JOIN section is executed.", 0) \