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FAQ: update outdated info (#1016)

* update outdated info

* Update FAQ.md
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dcalvin authored and lilin90 committed Apr 4, 2019
1 parent 0c89f5c commit b5b3ae83c1fe126877359c405ea1c9500ef98feb
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  1. +1 −1 FAQ.md
2 FAQ.md
@@ -458,7 +458,7 @@ This is because the `--initial-cluster` in the PD startup parameter contains a m

#### What's the maximum tolerance for time synchronization error of PD?

Theoretically, the smaller the time synchronization error, the better. PD can tolerate any synchronization error, but a larger error value means a longer period of service stop during the leader change. If the clock goes back during a leader change, the change process will not proceed until it catches up with the previous leader.
PD can tolerate any synchronization error, but a larger error value means a larger gap between the timestamp allocated by the PD and the physical time, which will affect functions such as read of historical versions.

#### How does the client connection find PD?

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