[jira] [Created] (HDFS-12906) hedged point read in DFSInputStream sends only 1 hedge read request
Tao Zhang created HDFS-12906: Summary: hedged point read in DFSInputStream sends only 1 hedge read request Key: HDFS-12906 URL: https://issues.apache.org/jira/browse/HDFS-12906 Project: Hadoop HDFS Issue Type: Bug Components: hdfs-client Reporter: Tao Zhang Assignee: Tao Zhang Hedged point read is handled in DFSInputStream.hedgedFetchBlockByteRange(). It calls "getFirstToComplete()" to get the 1st returned result after sending out hedge read requests. But since "getFirstToComplete()" uses "CompletionService.take()" which is a endlessly blocking operation. It will wait for 1 result after sending only 1 hedge read request. It could be changed to wait for a specific timeout (instead of infinite timeout) and starting another hedge read request. -- This message was sent by Atlassian JIRA (v6.4.14#64029) - To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org
[jira] [Created] (HDFS-11719) Arrays.fill() wrong index in BlockSender.readChecksum() exception handling
Tao Zhang created HDFS-11719: Summary: Arrays.fill() wrong index in BlockSender.readChecksum() exception handling Key: HDFS-11719 URL: https://issues.apache.org/jira/browse/HDFS-11719 Project: Hadoop HDFS Issue Type: Bug Components: datanode Reporter: Tao Zhang Assignee: Tao Zhang In BlockSender.readChecksum() exception handling part: Arrays.fill(buf, checksumOffset, checksumLen, (byte) 0); Actually the paramters should be: Arrays.fill(buf, , , value); So it should be changed to: Arrays.fill(buf, checksumOffset, checksumOffset + checksumLen, (byte) 0); -- 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
