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Release 0.268

presto-docs/src/main/sphinx/release/release-0.268.rst

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============= Release 0.268

Details

General Changes

  • Add support to use consistent hashing as a hash strategy when affinity scheduling is used. This feature can be turned on by setting node-scheduler.node-selection-hash-strategy to CONSISTENT. A separate configuration node-scheduler.consistent-hashing-min-virtual-node-count specifies the minimal number of virtual nodes in the consistent hashing ring.

Hive Changes

  • Add support for in-memory orc stripe row group index caching. This feature is disabled by default. To enable, set orc.row-group-index-cache-enabled to true. The cache size can be configured with orc.row-group-index-cache-size, and cache TTL can be configured with orc.row-group-index-cache-ttl-since-last-access.
  • Support Hive scalar function.

Iceberg Changes

  • Add support for in-memory orc stripe row group index caching. This feature is disabled by default. To enable, set orc.row-group-index-cache-enabled to true. The cache size can be configured with orc.row-group-index-cache-size, and cache TTL can be configured with orc.row-group-index-cache-ttl-since-last-access.

Pinot Changes

  • Adding config pinot.extra-grpc-metadata to allow customized gRPC request metadata.
  • Adding config pinot.override-distinct-count-function and session config override_distinct_count_function to override distinctCount function name.
  • Adding configs pinot.use-https-for-controller/broker/proxy to allow using https for Pinot REST APIs.

Credits

Ajay George, Alex Ryckman Mellnik, Arunachalam Thirupathi, Beinan Wang, Chen, Jack Ye, James Sun, Neerad Somanchi, Pranjal Shankhdhar, Reetika Agrawal, Rongrong Zhong, SOURAV PAL, Sagar Sumit, Sreeni Viswanadha, Swapnil Tailor, Thejas Viswanathan, Timothy Meehan, Xiang Fu, Ying Su, Zac, Zhan Yuan, Zhenxiao Luo, mengdilin, tanjialiang, zhaoyulong