[ https://issues.apache.org/jira/browse/HDFS-9221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod Kumar Vavilapalli updated HDFS-9221: ------------------------------------------ Fix Version/s: (was: 3.0.0) > HdfsServerConstants#ReplicaState#getState should avoid calling values() since > it creates a temporary array > ---------------------------------------------------------------------------------------------------------- > > Key: HDFS-9221 > URL: https://issues.apache.org/jira/browse/HDFS-9221 > Project: Hadoop HDFS > Issue Type: Improvement > Components: performance > Affects Versions: 2.7.1 > Reporter: Staffan Friberg > Assignee: Staffan Friberg > Fix For: 2.7.2 > > Attachments: HADOOP-9221.001.patch > > > When the BufferDecoder in BlockListAsLongs converts the stored value to a > ReplicaState enum it calls ReplicaState.getState(int) unfortunately this > method creates a ReplicaState[] for each call since it calls > ReplicaState.values(). > This patch creates a cached version of the values and thus avoid all > allocation when doing the conversion. -- This message was sent by Atlassian JIRA (v6.3.4#6332)