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ASF GitHub Bot commented on HADOOP-18184: ----------------------------------------- steveloughran commented on PR #5832: URL: https://github.com/apache/hadoop/pull/5832#issuecomment-1636115561 tested, s3 london, with `-Dparallel-tests -DtestsThreadCount=8 -Dprefetch -Dscale` and no VPN in the way. This is getting back to as slow as it used to be -and so needs work. All the landasat tests are going to be long-haul for most people; the existing hugefile tests should be extended to do the reading on their files which are (a) on the chosen aws region and (b) let you control the filesize ``` [INFO] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 29:27 min (Wall Clock) [INFO] Finished at: 2023-07-14T17:34:02+01:00 [INFO] ------------------------------------------------------------------------ [WARNING] ``` > s3a prefetching stream to support unbuffer() > -------------------------------------------- > > Key: HADOOP-18184 > URL: https://issues.apache.org/jira/browse/HADOOP-18184 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 > Affects Versions: 3.4.0 > Reporter: Steve Loughran > Assignee: Steve Loughran > Priority: Minor > Labels: pull-request-available > > Apache Impala uses unbuffer() to free up all client side resources held by a > stream, so allowing it to have a map of available (path -> stream) objects, > retained across queries. > This saves on having to reopen the files, with the cost of HEAD checks etc. > S3AInputStream just closes its http connection. here there is a lot more > state to discard, but all memory and file storage must be freed. > until this done, ITestS3AContractUnbuffer must skip when the prefetch stream > is used. > its notable that the other tests don't fail, even though the stream doesn't > implement the interface; the graceful degradation handles that. it should > fail if the test xml resource says the stream does it, but that the stream > capabilities say it doesn't. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org