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https://github.com/ClickHouse/ClickHouse.git
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84 lines
3.9 KiB
C++
84 lines
3.9 KiB
C++
#pragma once
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#include <base/defines.h>
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#define DBMS_DEFAULT_PORT 9000
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#define DBMS_DEFAULT_SECURE_PORT 9440
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#define DBMS_DEFAULT_CONNECT_TIMEOUT_SEC 10
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#define DBMS_DEFAULT_SEND_TIMEOUT_SEC 300
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#define DBMS_DEFAULT_RECEIVE_TIMEOUT_SEC 300
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/// Timeout for synchronous request-result protocol call (like Ping or TablesStatus).
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#define DBMS_DEFAULT_SYNC_REQUEST_TIMEOUT_SEC 5
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#define DBMS_DEFAULT_POLL_INTERVAL 10
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/// The size of the I/O buffer by default.
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#define DBMS_DEFAULT_BUFFER_SIZE 1048576ULL
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/** Which blocks by default read the data (by number of rows).
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* Smaller values give better cache locality, less consumption of RAM, but more overhead to process the query.
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*/
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#define DEFAULT_BLOCK_SIZE 65505 /// 65536 minus 16 + 15 bytes padding that we usually have in arrays
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/** Which blocks should be formed for insertion into the table, if we control the formation of blocks.
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* (Sometimes the blocks are inserted exactly such blocks that have been read / transmitted from the outside, and this parameter does not affect their size.)
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* More than DEFAULT_BLOCK_SIZE, because in some tables a block of data on the disk is created for each block (quite a big thing),
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* and if the parts were small, then it would be costly then to combine them.
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*/
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#define DEFAULT_INSERT_BLOCK_SIZE 1048545 /// 1048576 minus 16 + 15 bytes padding that we usually have in arrays
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/** The same, but for merge operations. Less DEFAULT_BLOCK_SIZE for saving RAM (since all the columns are read).
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* Significantly less, since there are 10-way mergers.
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*/
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#define DEFAULT_MERGE_BLOCK_SIZE 8192
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#define DEFAULT_TEMPORARY_LIVE_VIEW_TIMEOUT_SEC 5
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#define DEFAULT_PERIODIC_LIVE_VIEW_REFRESH_SEC 60
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#define DEFAULT_WINDOW_VIEW_CLEAN_INTERVAL_SEC 5
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#define DEFAULT_WINDOW_VIEW_HEARTBEAT_INTERVAL_SEC 15
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#define SHOW_CHARS_ON_SYNTAX_ERROR ptrdiff_t(160)
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#define DBMS_CONNECTION_POOL_WITH_FAILOVER_DEFAULT_MAX_TRIES 3
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/// each period reduces the error counter by 2 times
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/// too short a period can cause errors to disappear immediately after creation.
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#define DBMS_CONNECTION_POOL_WITH_FAILOVER_DEFAULT_DECREASE_ERROR_PERIOD 60
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/// replica error max cap, this is to prevent replica from accumulating too many errors and taking to long to recover.
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#define DBMS_CONNECTION_POOL_WITH_FAILOVER_MAX_ERROR_COUNT 1000
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/// The boundary on which the blocks for asynchronous file operations should be aligned.
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#define DEFAULT_AIO_FILE_BLOCK_SIZE 4096
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#define DEFAULT_HTTP_READ_BUFFER_TIMEOUT 180
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#define DEFAULT_HTTP_READ_BUFFER_CONNECTION_TIMEOUT 1
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/// Maximum number of http-connections between two endpoints
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/// the number is unmotivated
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#define DEFAULT_COUNT_OF_HTTP_CONNECTIONS_PER_ENDPOINT 15
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#define DBMS_DEFAULT_PATH "/var/lib/clickhouse/"
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/// Actually, there may be multiple acquisitions of different locks for a given table within one query.
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/// Check with IStorage class for the list of possible locks
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#define DBMS_DEFAULT_LOCK_ACQUIRE_TIMEOUT_SEC 120
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/// Default limit on recursion depth of recursive descend parser.
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#define DBMS_DEFAULT_MAX_PARSER_DEPTH 1000
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/// Default limit on query size.
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#define DBMS_DEFAULT_MAX_QUERY_SIZE 262144
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/// Max depth of hierarchical dictionary
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#define DBMS_HIERARCHICAL_DICTIONARY_MAX_DEPTH 1000
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/// Query profiler cannot work with sanitizers.
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/// Sanitizers are using quick "frame walking" stack unwinding (this implies -fno-omit-frame-pointer)
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/// And they do unwinding frequently (on every malloc/free, thread/mutex operations, etc).
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/// They change %rbp during unwinding and it confuses libunwind if signal comes during sanitizer unwinding
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/// and query profiler decide to unwind stack with libunwind at this moment.
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///
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/// Symptoms: you'll get silent Segmentation Fault - without sanitizer message and without usual ClickHouse diagnostics.
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///
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/// Look at compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h
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#if !defined(SANITIZER)
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#define QUERY_PROFILER_DEFAULT_SAMPLE_RATE_NS 1000000000
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#else
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#define QUERY_PROFILER_DEFAULT_SAMPLE_RATE_NS 0
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#endif
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