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vitess v3.0 Release Notes

Release Date: 2018-12-10 // over 5 years ago

  • Vitess 3.0 many new features over 2.2.

    Download

    • 🐳 Server binaries are available in the Docker image "vitess/lite:v3.0.0-rc.1".
    • 📦 Java client packages are published on Maven Central (To be uploaded).
    • Source code is available via the tag "v3.0.0-rc.1".

    ⬆️ Upgrading

    🚀 All Vitess 3.0 changes are backward compatible with the 2.2 release. Please make sure that you follow the recommended upgrade order: vttablet->vtctld->vtgate.

    🔄 Changes since 2.2

    Usability

    • Tutorial that runs on Minikube
    • Tutorial that runs on local host
    • Simplified db parameters for vttablet
    • 👍 Formal support for externally managed mysql

    Monitoring

    • Prometheus plug-in

    SQL constructs

    • ⏱ Comment directives: QUERY_TIMEOUT_MS=1000, MULTI_SHARD_AUTOCOMMIT, SKIP_QUERY_PLAN_CACHE
    • Partial Scatter
    • 🆕 New ALTER VSCHEMA syntax
    • Multi-table DDL statements
    • Workbench connectivity
    • Cross-shard subqueries
    • 👌 Improved handling of select * constructs

    🐎 Performance

    • vtbench: Benchmarking tool
    • 🐎 MySQL protocol performance improvements
    • Faster reparents
    • Parallelized backups (4X faster)
    • Snappier InitShardMaster and PlannedReparentShard
    • 👌 Improved coordination with Orchestrator

    🆕 New MySQL versions support

    • MySQL 8.0 and MariaDB 10.3

    🏗 Build

    • 🏗 Pure Go 1.11. You can now build with CGO_ENABLED=0.

    Resharding and VReplication

    • 👉 ShowResharding
    • CancelResharding
    • Safer MigrateServedTypes
    • ⏪ Auto-reverse direction of MigrateServedTypes to allow rollback of a previous MigrateServedTypes
    • Workflow SplitDiff parallelized across shards
    • 👯 SplitClone uses destination master for comparison