[jira] [Resolved] (HIVE-19205) Hive streaming ingest improvements (v2)

["Prasanth Jayachandran (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-19205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prasanth Jayachandran resolved HIVE-19205.
------------------------------------------
          Resolution: Fixed
       Fix Version/s: 3.0.0
    Target Version/s: 3.1.0, 3.0.0  (was: 3.0.0, 3.1.0)

> Hive streaming ingest improvements (v2)
> ---------------------------------------
>
>                 Key: HIVE-19205
>                 URL: https://issues.apache.org/jira/browse/HIVE-19205
>             Project: Hive
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 3.0.0, 3.1.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>            Priority: Major
>             Fix For: 3.0.0
>
>
> This is umbrella jira to track hive streaming ingest improvements. At a high level following are the improvements
> - Support for dynamic partitioning
> - API changes (simple streaming connection builder)
> - Hide the transaction batches from clients (client can tune the transaction batch but doesn't have to know about the transaction batch size)
> - Support auto rollover to next transaction batch (clients don't have to worry about closing a transaction batch and opening a new one)
> - Record writers will all be strict meaning the schema of the record has to match table schema. This is to avoid the multiple serialization/deserialization for re-ordering columns if there is schema mismatch
> - Automatic distribution for non-bucketed tables so that compactor can have more parallelism
> - Create delta files with all ORC overhead disabled (no index, no compression, no dictionary). Compactor will recreate the orc files with index, compression and dictionary encoding.
> - Automatic memory management via auto-flushing (will yield smaller stripes for delta files but is more scalable and clients don't have to worry about distributing the data across writers)
> - Support for more writers (Avro specifically. ORC passthrough format?)
> - Support to accept input stream instead of record byte[]
> - Removing HCatalog dependency (old streaming API will be in the hcatalog package for backward compatibility, new streaming API will be in its own hive module)



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