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reference/tidb-binlog: add docs about relay log #2224

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merged 27 commits into from
Feb 19, 2020
Merged

reference/tidb-binlog: add docs about relay log #2224

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0dc57be
Add docs about relay log
july2993 Feb 10, 2020
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Merge branch 'master' into relay_doc
IANTHEREAL Feb 10, 2020
aaa1418
Address comment
july2993 Feb 10, 2020
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Merge remote-tracking branch 'july2993/relay_doc' into relay_doc
july2993 Feb 10, 2020
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july2993 Feb 10, 2020
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Remove trailing space
july2993 Feb 10, 2020
42cca9d
Update dev/reference/tidb-binlog/deploy.md
july2993 Feb 12, 2020
161a7ea
Add GC strategy
july2993 Feb 12, 2020
7571cdb
rename status as consistent
july2993 Feb 12, 2020
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Merge branch 'master' into relay_doc
july2993 Feb 12, 2020
7b00bc7
refine document of binlog relay
IANTHEREAL Feb 13, 2020
973a764
add relay
IANTHEREAL Feb 13, 2020
6efa7d8
refine relay log description
IANTHEREAL Feb 13, 2020
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format document
IANTHEREAL Feb 13, 2020
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Merge branch 'master' into relay_doc
IANTHEREAL Feb 13, 2020
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july2993 Feb 17, 2020
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july2993 Feb 17, 2020
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Merge branch 'master' into relay_doc
july2993 Feb 17, 2020
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july2993 Feb 18, 2020
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Merge branch 'master' into relay_doc
july2993 Feb 18, 2020
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Merge branch 'master' into relay_doc
IANTHEREAL Feb 18, 2020
68cac7b
reference/tidb-binlog: fix typos, add aliases, add toc
TomShawn Feb 18, 2020
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Merge branch 'master' into relay_doc
july2993 Feb 19, 2020
45b561a
align other versions
july2993 Feb 19, 2020
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Update v3.1/reference/tidb-binlog/relay-log.md
july2993 Feb 19, 2020
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july2993 Feb 19, 2020
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july2993 Feb 19, 2020
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format document
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@IANTHEREAL
IANTHEREAL committed Feb 13, 2020
commit c8c1b251c1f6fe96e892d64e3a9ed4ac0b143b8e
1 change: 0 additions & 1 deletion dev/reference/tidb-binlog/relay-log.md
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Expand Up @@ -35,7 +35,6 @@ mysql> select * from tidb_binlog.checkpoint;

除非同时丢失 relay log 数据，不过这是概率极小的事件。此外可以使用 nfs 等网络文件系统来保证 relay log 的数据安全。


### 触发从 relay log 消费 binlog

当 drainer 启动时连接不上上游集群的 PD 并且探测到 checkpoint 的 `consistent = false` , 会尝试读取 relay log 将下游集群恢复到一个一致的状态，然后 drainer 进程将 checkpoint 的 status 设置为 0 后主动退出。
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