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  1. Generate new write id for every write operation involving managed tables. Since DbTxnManager cache write id for every transaction, so every query will generate at most one new write id for a single table, even if it consists of multiple Hive.java write API calls
  2. Retrieve table write id from config for every read operation if exists (for managed table, it guarantees to be there in config), and pass the write id to HMS API

Changes in Other

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Components

All other components invoking HMS API directly (bypass Hive.java) will be changed to invoke the newer HMS API. This includes HCatalog, Hive streaming, etc, and other projects using HMS client such as Impala.

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