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https://issues.apache.org/jira/browse/HIVE-21146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Lavati reassigned HIVE-21146:
-----------------------------------

    Assignee: David Lavati

> Enforce TransactionBatch size=1 for blob stores
> -----------------------------------------------
>
>                 Key: HIVE-21146
>                 URL: https://issues.apache.org/jira/browse/HIVE-21146
>             Project: Hive
>          Issue Type: Bug
>          Components: Streaming, Transactions
>    Affects Versions: 3.0.0
>            Reporter: Eugene Koifman
>            Assignee: David Lavati
>            Priority: Major
>
> Streaming Ingest API supports a concept of {{TransactionBatch}} where N 
> transactions can be opened at once and the data in all of them will be 
> written to the same delta_x_y directory where each transaction in the batch 
> can be committed/aborted independently.  The implementation relies on 
> {{FSDataOutputStream.hflush()}} (called from OrcRecordUpdater}} which is 
> available on HDFS but is often implemented as no-op in Blob store backed 
> {{FileSystem}} objects.
> Need to add a check to {{HiveStreamingConnection()}} constructor to raise an 
> error if {{builder.transactionBatchSize > 1}} and the target table/partitions 
> are backed by something that doesn't support {{hflush()}}.



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