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Steve Loughran commented on HADOOP-18185: ----------------------------------------- +many of the info log entries should go to debug; error in prefetch go to info with stack only at debug. prefetch ioes can be recovered from, so no need to overreact. > tune logging of prefetch problems > --------------------------------- > > Key: HADOOP-18185 > URL: https://issues.apache.org/jira/browse/HADOOP-18185 > Project: Hadoop Common > Issue Type: Sub-task > Components: fs/s3 > Affects Versions: 3.4.0 > Reporter: Steve Loughran > Priority: Major > > we need to think what we want to do here. > * we would want errors to be counted and included in stream iostats > * but we've seen abfs apps flooded with stack traces when a transient network > error breaks every prefetch. > * logging through LogExactlyOnce would highlight a problem, but on a long > lived process, not show enough, unless the cache manager had a per instance > value. > # PrefetchTask needs to be non static and update the CachingBlockManager when > there is a problem; it can LogExactlyOnce > # stream statistics need to include cache values (hits, misses, prefech > failures, how long futures were queued before execution...) -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org