Cherry pick follower read to TiDB (#11347)#12535
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sre-bot merged 5 commits intoOct 12, 2019
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@sunxiaoguang Please help check. |
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/run-common-test tidb-test=pr/906 |
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Looks like build.sh is trying to verify kvproto version which caused common test to fail. What can we do about this? @qrr1995 |
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/run-common-test |
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/run-all-tests |
…erry_pick_follower_read
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/run-all-tests |
lonng
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cherry pick #11347 to 3.1
Fix code conflicts from 4.0 to 3.1. Users can use
tidb_replica_readsession variable to choose reading from leader or follower. To make it consistent with existing behavior, leader will be used by default unless follower is explicitly specified otherwise.Add a session scope variable
tidb_replica_readto specify if TiDB should read data from leader or follower.