3 ms·

2-random was also used in this HDFS change - https://issues.apache.org/jira/browse/HDFS-8131 https://issues.apache.org/jira/browse/HDFS-8131. Default block pla

by zodvik 8y ago

2-random was also used in this HDFS change - https://issues.apache.org/jira/browse/HDFS-8131 https://issues.apache.org/jira/browse/HDFS-8131. Default block placement policy chose datanodes randomly for new blocks. This change selects 2 datanodes randomly and picks the one with lower used disk space.