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Jiebin Sun 2024-09-18 21:42:03 +02:00 committed by GitHub
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2 changed files with 8 additions and 4 deletions

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@ -226,8 +226,8 @@ class IColumn;
M(UInt64, output_format_compression_level, 3, "Default compression level if query output is compressed. The setting is applied when `SELECT` query has `INTO OUTFILE` or when inserting to table function `file`, `url`, `hdfs`, `s3`, and `azureBlobStorage`.", 0) \
M(UInt64, output_format_compression_zstd_window_log, 0, "Can be used when the output compression method is `zstd`. If greater than `0`, this setting explicitly sets compression window size (power of `2`) and enables a long-range mode for zstd compression.", 0) \
\
M(UInt64, merge_tree_min_rows_for_concurrent_read, (20 * 8192), "If at least as many lines are read from one file, the reading can be parallelized.", 0) \
M(UInt64, merge_tree_min_bytes_for_concurrent_read, (24 * 10 * 1024 * 1024), "If at least as many bytes are read from one file, the reading can be parallelized.", 0) \
M(UInt64, merge_tree_min_rows_for_concurrent_read, (16 * 8192), "If at least as many lines are read from one file, the reading can be parallelized.", 0) \
M(UInt64, merge_tree_min_bytes_for_concurrent_read, (16 * 10 * 1024 * 1024), "If at least as many bytes are read from one file, the reading can be parallelized.", 0) \
M(UInt64, merge_tree_min_rows_for_seek, 0, "You can skip reading more than that number of rows at the price of one seek per file.", 0) \
M(UInt64, merge_tree_min_bytes_for_seek, 0, "You can skip reading more than that number of bytes at the price of one seek per file.", 0) \
M(UInt64, merge_tree_coarse_index_granularity, 8, "If the index segment can contain the required keys, divide it into as many parts and recursively check them.", 0) \
@ -767,8 +767,8 @@ class IColumn;
M(Bool, local_filesystem_read_prefetch, false, "Should use prefetching when reading data from local filesystem.", 0) \
M(Bool, remote_filesystem_read_prefetch, true, "Should use prefetching when reading data from remote filesystem.", 0) \
M(Int64, read_priority, 0, "Priority to read data from local filesystem or remote filesystem. Only supported for 'pread_threadpool' method for local filesystem and for `threadpool` method for remote filesystem.", 0) \
M(UInt64, merge_tree_min_rows_for_concurrent_read_for_remote_filesystem, (20 * 8192), "If at least as many lines are read from one file, the reading can be parallelized, when reading from remote filesystem.", 0) \
M(UInt64, merge_tree_min_bytes_for_concurrent_read_for_remote_filesystem, (24 * 10 * 1024 * 1024), "If at least as many bytes are read from one file, the reading can be parallelized, when reading from remote filesystem.", 0) \
M(UInt64, merge_tree_min_rows_for_concurrent_read_for_remote_filesystem, (16 * 8192), "If at least as many lines are read from one file, the reading can be parallelized, when reading from remote filesystem.", 0) \
M(UInt64, merge_tree_min_bytes_for_concurrent_read_for_remote_filesystem, (16 * 10 * 1024 * 1024), "If at least as many bytes are read from one file, the reading can be parallelized, when reading from remote filesystem.", 0) \
M(UInt64, remote_read_min_bytes_for_seek, 4 * DBMS_DEFAULT_BUFFER_SIZE, "Min bytes required for remote read (url, s3) to do seek, instead of read with ignore.", 0) \
M(UInt64, merge_tree_min_bytes_per_task_for_remote_reading, 2 * DBMS_DEFAULT_BUFFER_SIZE, "Min bytes to read per task.", 0) ALIAS(filesystem_prefetch_min_bytes_for_single_read_task) \
M(Bool, merge_tree_use_const_size_tasks_for_remote_reading, true, "Whether to use constant size tasks for reading from a remote table.", 0) \

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@ -0,0 +1,4 @@
PLEASE ADD THE SETTING VALUE CHANGE TO SettingsChangesHistory.cpp: merge_tree_min_rows_for_concurrent_read WAS CHANGED FROM 163840 TO 131072
PLEASE ADD THE SETTING VALUE CHANGE TO SettingsChangesHistory.cpp: merge_tree_min_bytes_for_concurrent_read WAS CHANGED FROM 251658240 TO 167772160
PLEASE ADD THE SETTING VALUE CHANGE TO SettingsChangesHistory.cpp: merge_tree_min_rows_for_concurrent_read_for_remote_filesystem WAS CHANGED FROM 163840 TO 131072
PLEASE ADD THE SETTING VALUE CHANGE TO SettingsChangesHistory.cpp: merge_tree_min_bytes_for_concurrent_read_for_remote_filesystem WAS CHANGED FROM 251658240 TO 167772160