[ https://issues.apache.org/jira/browse/HDFS-13947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16635695#comment-16635695 ]
BELUGA BEHR commented on HDFS-13947: ------------------------------------ I've got more work I want to do in regards to scanning... but one thing at a time. :) > Review of DirectoryScanner Class > -------------------------------- > > Key: HDFS-13947 > URL: https://issues.apache.org/jira/browse/HDFS-13947 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Affects Versions: 3.2.0 > Reporter: BELUGA BEHR > Assignee: BELUGA BEHR > Priority: Major > Attachments: HDFS-13947.1.patch, HDFS-13947.2.patch, > HDFS-13947.3.patch, HDFS-13947.4.patch > > > Review of Directory Scanner. Replaced a lot of code with Guava MultiMap. > Some general house cleaning and improved logging. For performance, using > {{ArrayList}} instead of {{LinkedList}} where possible, especially since > these lists can be quite large a LinkedList will consume a lot of memory and > be slow to sort/iterate over. > https://stackoverflow.com/questions/322715/when-to-use-linkedlist-over-arraylist-in-java -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org