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38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
#pragma once
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#include <Core/BaseSettings.h>
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#include <Core/Settings.h>
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namespace DB
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{
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class ASTStorage;
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#define FILELOG_RELATED_SETTINGS(M, ALIAS) \
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/* default is stream_poll_timeout_ms */ \
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M(Milliseconds, poll_timeout_ms, 0, "Timeout for single poll from StorageFileLog.", 0) \
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M(UInt64, poll_max_batch_size, 0, "Maximum amount of messages to be polled in a single StorageFileLog poll.", 0) \
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M(UInt64, max_block_size, 0, "Number of row collected by poll(s) for flushing data from StorageFileLog.", 0) \
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M(UInt64, max_threads, 0, "Number of max threads to parse files, default is 0, which means the number will be max(1, physical_cpu_cores / 4)", 0) \
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M(Milliseconds, poll_directory_watch_events_backoff_init, 500, "The initial sleep value for watch directory thread.", 0) \
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M(Milliseconds, poll_directory_watch_events_backoff_max, 32000, "The max sleep value for watch directory thread.", 0) \
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M(UInt64, poll_directory_watch_events_backoff_factor, 2, "The speed of backoff, exponential by default", 0)
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#define LIST_OF_FILELOG_SETTINGS(M, ALIAS) \
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FILELOG_RELATED_SETTINGS(M, ALIAS) \
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FORMAT_FACTORY_SETTINGS(M, ALIAS)
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DECLARE_SETTINGS_TRAITS(FileLogSettingsTraits, LIST_OF_FILELOG_SETTINGS)
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/** Settings for the FileLog engine.
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* Could be loaded from a CREATE TABLE query (SETTINGS clause).
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*/
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struct FileLogSettings : public BaseSettings<FileLogSettingsTraits>
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{
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void loadFromQuery(ASTStorage & storage_def);
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};
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}
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