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Erik Krogen commented on HDFS-12976: ------------------------------------ {quote} The thing is that, the current patch looks at ReadOnly to determine if a call should go to observer, meaning if a method is annotated with ReadOnly, it always go to Observer, is this the case? Because there may be situations where we want to make a read call to active, which becomes impossible. I guess a more ideal way would probably be having new annotations for observer operation and active options, which is also for better readability. {quote} The ReadOnly annotation added in HDFS-13578 supports a flag {{activeOnly}} to indicate that, although it is a read operation, it should only be served by the active. Does this meet your requirement or are you saying there should be a way to dynamically decide? > Introduce ObserverReadProxyProvider > ----------------------------------- > > Key: HDFS-12976 > URL: https://issues.apache.org/jira/browse/HDFS-12976 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: hdfs-client > Reporter: Konstantin Shvachko > Assignee: Chao Sun > Priority: Major > Attachments: HDFS-12976-HDFS-12943.000.patch, HDFS-12976.WIP.patch > > > {{StandbyReadProxyProvider}} should implement {{FailoverProxyProvider}} > interface and be able to submit read requests to ANN and SBN(s). -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org