Shuyan Zhang created HDFS-16974: ----------------------------------- Summary: Consider load of every volume when choosing target Key: HDFS-16974 URL: https://issues.apache.org/jira/browse/HDFS-16974 Project: Hadoop HDFS Issue Type: Improvement Reporter: Shuyan Zhang
The current target choosing policy only considers the load of the entire datanode. If both DN1 and DN2 have an `xceiverCount` of 100, but DN1 has 10 volumes to write to and DN2 only has 1, then the pressure on DN2 is actually much greater than that on DN1. This patch has added a configuration that allows us to avoid nodes with too much pressure on a single volume when choosing targets, so as to avoid overloading datanodes with few volumes or slowing down writes. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org