Hanisha Koneru created HDFS-11789: ------------------------------------- Summary: Maintain Short-Circuit Read Statistics Key: HDFS-11789 URL: https://issues.apache.org/jira/browse/HDFS-11789 Project: Hadoop HDFS Issue Type: Improvement Reporter: Hanisha Koneru Assignee: Hanisha Koneru
If a disk or controller hardware is faulty then short-circuit read requests can stall indefinitely while reading from the file descriptor. Currently there is no way to detect when short-circuit read requests are slow or blocked. This Jira proposes that each BlockReaderLocal maintain read statistics while it is active by measuring the time taken for a pre-determined fraction of read requests. These per-reader stats can be aggregated into global stats when the reader is closed. The aggregate statistics can be exposed via JMX. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org