[ https://issues.apache.org/jira/browse/HDFS-5788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nathan Roberts updated HDFS-5788: --------------------------------- Status: Patch Available (was: Open) > listLocatedStatus response can be very large > -------------------------------------------- > > Key: HDFS-5788 > URL: https://issues.apache.org/jira/browse/HDFS-5788 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Affects Versions: 2.2.0, 0.23.10, 3.0.0 > Reporter: Nathan Roberts > Assignee: Nathan Roberts > Attachments: HDFS-5788.patch > > > Currently we limit the size of listStatus requests to a default of 1000 > entries. This works fine except in the case of listLocatedStatus where the > location information can be quite large. As an example, a directory with 7000 > entries, 4 blocks each, 3 way replication - a listLocatedStatus response is > over 1MB. This can chew up very large amounts of memory in the NN if lots of > clients try to do this simultaneously. > Seems like it would be better if we also considered the amount of location > information being returned when deciding how many files to return. > Patch will follow shortly. -- This message was sent by Atlassian JIRA (v6.1.5#6160)