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Arpit Agarwal commented on HDFS-6093: ------------------------------------- +1 for the idea, thanks Andrew! :-) I'll try to review this tomorrow if no one else has got to it by then. > Expose more caching information for debugging by users > ------------------------------------------------------ > > Key: HDFS-6093 > URL: https://issues.apache.org/jira/browse/HDFS-6093 > Project: Hadoop HDFS > Issue Type: Improvement > Components: caching > Affects Versions: 2.4.0 > Reporter: Andrew Wang > Assignee: Andrew Wang > Attachments: hdfs-6093-1.patch > > > When users submit a new cache directive, it's unclear if the NN has > recognized it and is actively trying to cache it, or if it's hung for some > other reason. It'd be nice to expose a "pending caching/uncaching" count the > same way we expose pending replication work. > It'd also be nice to display the aggregate cache capacity and usage in > dfsadmin -report, since we already have have it as a metric and expose it > per-DN in report output. -- This message was sent by Atlassian JIRA (v6.2#6252)