steveloughran opened a new pull request, #5103: URL: https://github.com/apache/hadoop/pull/5103
Adds new config option fs.azure.enable.readahead to turn off readahead * also allows it to be passed in through openFile(), which means that if you set it in a mr/spark/hive job conf with "mapreduce.job.input.file.option." as the prefix, it will be disabled when used through LineRecordReader, FixedLengthRecordReader and a few others. * extends ITestAbfsReadWriteAndSeek to use the option, including one replicated test...that shows that turning it off is slower. ### How was this patch tested? 1. modified (scale) itest. 2. been in the cloudera builds for a long time. 3. ### For code changes: - [X] Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')? - [X] Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`, `NOTICE-binary` files? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
