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Release date: April 8, 2020

TiKV version: 4.0.0-rc

Compatibility Changes

  • TiKV

    • Support the pipelined feature in pessimistic transactions, which improves the TPC-C performance by 20%. The risk is that the transaction commit might fail because of lock failure during the execution #6984
    • Enable the unify-read-pool configuration item in new clusters by default and use the previous setting of this item in old clusters #7059

New Features

  • TiKV

    • Support the pipelined feature in pessimistic transactions, which improves the TPC-C performance by 20%. The risk is that the transaction commit might fail because of lock failure during the execution #6984
    • Support TLS in the HTTP port #5393
    • Enable the unify-read-pool configuration item in new clusters by default and use the previous setting of this item in old clusters #7059

  • PD

    • Support getting the default PD configuration information through the HTTP API #2258

Bug Fixes

  • TiKV

    • Fix the possible panic caused by transferring the leader when the Follower Read feature is enabled #7101