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https://issues.apache.org/jira/browse/HDFS-17124?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simbarashe Dzinamarira updated HDFS-17124:
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Description:
The "dfs.client.rbf.observer.enable" flag was add to allow a client using
IPFailoverProxyProvider to use observer reads with routers.
Now we have implemented the RouterObserverReadProxyProvider which better
supported observer reads, i.e performing msync automatically.
In our environment, we still have clients that opted out of observer reads by
setting "dfs.client.rbf.observer.enable
=false". The RouterObserverReadProxyProvider should respect the opt-out
decision of these clients.
was:
The "dfs.client.rbf.observer.enabled" flag was add to allow a client using
IPFailoverProxyProvider to use observer reads with routers.
Now we have implemented the RouterObserverReadProxyProvider which better
supported observer reads, i.e performing msync automatically.
In our environment, we still have clients that opted out of observer reads by
setting "dfs.client.rbf.observer.enabled=false". The
RouterObserverReadProxyProvider should respect the opt-out decision of these
clients.
> RBF: RouterObserverReadProxyProvider should respect observer read opt-out via
> dfs.client.rbf.observer.enable=false flag.
> ------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-17124
> URL: https://issues.apache.org/jira/browse/HDFS-17124
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Simbarashe Dzinamarira
> Assignee: Simbarashe Dzinamarira
> Priority: Minor
>
> The "dfs.client.rbf.observer.enable" flag was add to allow a client using
> IPFailoverProxyProvider to use observer reads with routers.
> Now we have implemented the RouterObserverReadProxyProvider which better
> supported observer reads, i.e performing msync automatically.
> In our environment, we still have clients that opted out of observer reads by
> setting "dfs.client.rbf.observer.enable
> =false". The RouterObserverReadProxyProvider should respect the opt-out
> decision of these clients.
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