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lindongdong commented on MAPREDUCE-7073: ---------------------------------------- *Thanks~~* > Optimize TokenCache#obtainTokensForNamenodesInternal > ---------------------------------------------------- > > Key: MAPREDUCE-7073 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-7073 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Bibin A Chundatt > Assignee: Bibin A Chundatt > Priority: Major > Attachments: MAPREDUCE-7073.001.patch > > > {{FileInputFormat#listStatus}} is too slow file system cache is disabled. > {{TokenCache#obtainTokensForNamenodesInternal}} for every filesystem instance > {{Master.getMasterPrincipal(conf)}} is caled which reloads YarnConfiguration . > For fileInput with 1k file will reload YarnConfiguration 1k times. > {{Master.getMasterPrincipal(conf)}} can be passed for > {{obtainTokensForNamenodesInternal}} per filesystem call. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org