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体验新版 GitCode,发现更多精彩内容 >>
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51527154
编写于
7月 27, 2017
作者:
V
Vitaliy Lyudvichenko
提交者:
alexey-milovidov
7月 27, 2017
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Add detail comment. [#CLICKHOUSE-3173]
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-2
dbms/src/Storages/MergeTree/MergeTreeSettings.h
dbms/src/Storages/MergeTree/MergeTreeSettings.h
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dbms/src/Storages/MergeTree/MergeTreeSettings.h
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51527154
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@@ -52,9 +52,11 @@ struct MergeTreeSettings
/** Replication settings. */
/// How many last blocks of hashes should be kept in ZooKeeper.
/// How many last blocks of hashes should be kept in ZooKeeper
(old blocks will be deleted)
.
size_t
replicated_deduplication_window
=
100
;
/// How many seconds from an INSERT to the last INSERT should pass to delete the block hash from ZooKeeper.
/// Similar to previous, but determines old blocks by their lifetime.
/// Hash of an inserted block will be deleted (and the block will not be deduplicated after) if it outside of one "window".
/// You can set very big replicated_deduplication_window to avoid duplicating INSERTs during that period of time.
size_t
replicated_deduplication_window_seconds
=
7
*
24
*
60
*
60
;
/// one week
/// Keep about this number of last records in ZooKeeper log, even if they are obsolete.
...
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