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https://issues.apache.org/jira/browse/HUDI-1554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HUDI-1554:
---------------------------------
Labels: pull-request-available (was: )
> Introduce buffering for streams in HUDI
> ---------------------------------------
>
> Key: HUDI-1554
> URL: https://issues.apache.org/jira/browse/HUDI-1554
> Project: Apache Hudi
> Issue Type: Improvement
> Reporter: Prashant Wason
> Assignee: Prashant Wason
> Priority: Major
> Labels: pull-request-available
>
> Input and Output streams created in HUDI through calls to
> HoodieWrapperFileSystem do not include any buffering unless the underlying
> file system implements buffering.
> DistributedFileSystem (over HDFS) does not implement any buffering. This
> leads to very large number of small-sized IO calls being send to the HDFS
> while performing HUDI IO operations like reading parquet, writing parquet,
> reading/writing log files, reading/writing instants, etc.
> This patch introduces buffering at the HoodieWrapperFileSystem level so that
> all types of reads and writes benefit from buffering.
>
> In my tests with at scale on HDFS writing 1million records into a parquet
> file (read from an existing parquet file in the same dataset), I observed the
> following benefits:
> # about 40% reduction in total time to run the test
> # Total write calls to HDFS reduced from 19.1M -> 328
> # Total read calls reduced from 229M -> 515K
>
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