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Steve Loughran commented on HADOOP-14495: ----------------------------------------- I think we need to to allow apps to declare that they *must* have a feature, a key one being that hsync really does have the expected semantics of "by the time this returns, the data has been persisted". The {{Syncable}} interface doesn't offer this guarantee, as all implementations of {{FSDataOutputStream}} claim to be {{Syncable}}. I also want the ability to set some specific options on a stream some just being a hint. That fadvise is my example, but as that's a need on an input stream, an issue for a separate builder. A better example is erasure-coding, maybe just something indicating expected data role, at least that something is going to be considered cool/cold data (though apps don't always know that themselves) > Add set options interface to FSDataOutputStreamBuilder > ------------------------------------------------------- > > Key: HADOOP-14495 > URL: https://issues.apache.org/jira/browse/HADOOP-14495 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs > Affects Versions: 3.0.0-alpha3 > Reporter: Lei (Eddy) Xu > Assignee: Lei (Eddy) Xu > -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org