[ https://issues.apache.org/jira/browse/SOLR-13029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16751270#comment-16751270 ]
ASF subversion and git services commented on SOLR-13029: -------------------------------------------------------- Commit c317119654c600f89eb29a423c51a8029f84033d in lucene-solr's branch refs/heads/master from Mikhail Khludnev [ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=c317119 ] SOLR-13029: configure buffer size in HdfsBackupRepository. > Allow HDFS backup/restore buffer size to be configured > ------------------------------------------------------ > > Key: SOLR-13029 > URL: https://issues.apache.org/jira/browse/SOLR-13029 > Project: Solr > Issue Type: Improvement > Security Level: Public(Default Security Level. Issues are Public) > Components: Backup/Restore, hdfs > Affects Versions: 7.5, 8.0 > Reporter: Tim Owen > Priority: Major > Attachments: SOLR-13029.patch, SOLR-13029.patch, SOLR-13029.patch > > > There's a default hardcoded buffer size setting of 4096 in the HDFS code > which means in particular that restoring a backup from HDFS takes a long > time. Copying multi-GB files from HDFS using a buffer as small as 4096 bytes > is very inefficient. We changed this in our local build used in production to > 256kB and saw a 10x speed improvement when restoring a backup. Attached patch > simply makes this size configurable using a command line setting, much like > several other buffer size values. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org