Suresh Srinivas created HDFS-4990: ------------------------------------- Summary: Block placement for storage types Key: HDFS-4990 URL: https://issues.apache.org/jira/browse/HDFS-4990 Project: Hadoop HDFS Issue Type: Sub-task Components: namenode Reporter: Suresh Srinivas
Currently block location for writes are made based on: # Datanode load (number of transceivers) # Space left on datanode # Topology With storage abstraction, namenode must choose a storage instead of a datanode for block placement. It also needs to consider storage type, load on the storage etc. As an additional benefit, currently HDFS support heterogeneous nodes (nodes with different number of spindles etc.) poorly. This work should help solve that issue as well. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira