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Steve Loughran commented on HADOOP-18028: ----------------------------------------- other issues/changes to consider * S3InMemoryInputStream to support direct byte buffers. not sure the benefit here, given the http api is all on heap. * org.apache.hadoop.fs.common.Validate to invoke o.a.h.util.Preconditions, . or better: move the methods there for better adoption. * code to use Objects.checkNotNull over Validate when assigning params. this will change the exception class raised on null params, so break tests. * tune classnames, e.g S3InputStream -> S3ABufferedStream, S3Reader -> StoreBlockReader, S3File -> OpenS3File. I think we just want to get the S3 prefixes off as all too often that means an AWS SDK class, not something in our own code > High performance S3A input stream with prefetching & caching > ------------------------------------------------------------ > > Key: HADOOP-18028 > URL: https://issues.apache.org/jira/browse/HADOOP-18028 > Project: Hadoop Common > Issue Type: Improvement > Components: fs/s3 > Reporter: Bhalchandra Pandit > Assignee: Bhalchandra Pandit > Priority: Major > Labels: pull-request-available > Time Spent: 13.5h > Remaining Estimate: 0h > > I work for Pinterest. I developed a technique for vastly improving read > throughput when reading from the S3 file system. It not only helps the > sequential read case (like reading a SequenceFile) but also significantly > improves read throughput of a random access case (like reading Parquet). This > technique has been very useful in significantly improving efficiency of the > data processing jobs at Pinterest. > > I would like to contribute that feature to Apache Hadoop. More details on > this technique are available in this blog I wrote recently: > [https://medium.com/pinterest-engineering/improving-efficiency-and-reducing-runtime-using-s3-read-optimization-b31da4b60fa0] > -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org