[ https://issues.apache.org/jira/browse/HDFS-9221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Junping Du updated HDFS-9221: ----------------------------- Fix Version/s: 2.8.0 > 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: 2.8.0, 2.7.2, 3.0.0-alpha1 > > 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) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org