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Mark Miller commented on SOLR-1475: ----------------------------------- Hmm - while Channel transfer is generally a win to equal with smaller files (ie < a gig) if you use a good sized buffer (about 32MB looking like the sweet spot), streams is looking *much* better on multi gig files. I think the best method is likely one that chooses one or the other based on the file size. > Java-based replication doesn't properly reserve its commit point during > backups > ------------------------------------------------------------------------------- > > Key: SOLR-1475 > URL: https://issues.apache.org/jira/browse/SOLR-1475 > Project: Solr > Issue Type: Bug > Components: replication (java) > Affects Versions: 1.4 > Reporter: Chris Harris > Assignee: Mark Miller > Fix For: 1.4 > > Attachments: SOLR-1475.patch, SOLR-1475.patch, SOLR-1475.patch > > > The issue title reflects Mark Miller's initial diagnosis of the problem. > Here are my symptoms: > This is regarding the backup feature of replication, as opposed to > replication. Backups seem to work fine on toy indexes. When trying backups > out on a copy of my production index (300GB-ish), though, I'm getting > FileNotFoundExceptions. These cancel the backup, and delete the > snapshot.yyyymmdd* directory. It seems reproducible, in that every time I try > to make a backup of my large index it will fail the same way. > This is Solr r815830. I'm not sure if this is something that would > potentially be addressed by SOLR-1458? (That patch is from after r815830.) > For now I'm not using any event-based backup triggers; instead I'm manually > hitting > http://master_host:port/solr/replication?command=backup > This successfully sets off a snapshot, as seen in a thread dump. However, > after a while the snapshot fails. I'll paste in a couple of stack traces > below. > I haven't seen any other evidence that my index is corrupt; in particular, > searching the index and Java-based replication seem to be working fine, and > the Lucene CheckIndex tool did not report any problems with the index. > ******************** > {code} > Sep 28, 2009 9:32:18 AM org.apache.solr.handler.SnapShooter createSnapshot > SEVERE: Exception while creating snapshot > java.io.FileNotFoundException: Source > 'E:\tomcat\solrstuff\solr\filingcore\data\index\_y0w.fnm' does not > exist > at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:637) > at > org.apache.commons.io.FileUtils.copyFileToDirectory(FileUtils.java:587) > at > org.apache.solr.handler.SnapShooter.createSnapshot(SnapShooter.java:83) > at org.apache.solr.handler.SnapShooter$1.run(SnapShooter.java:61) > Sep 28, 2009 10:39:43 AM org.apache.solr.handler.SnapShooter createSnapshot > SEVERE: Exception while creating snapshot > java.io.FileNotFoundException: Source > 'E:\tomcat\solrstuff\solr\filingcore\data\index\segments_by' does not > exist > at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:637) > at > org.apache.commons.io.FileUtils.copyFileToDirectory(FileUtils.java:587) > at > org.apache.solr.handler.SnapShooter.createSnapshot(SnapShooter.java:83) > at org.apache.solr.handler.SnapShooter$1.run(SnapShooter.java:61) > Sep 28, 2009 11:52:08 AM org.apache.solr.handler.SnapShooter createSnapshot > SEVERE: Exception while creating snapshot > java.io.FileNotFoundException: Source > 'E:\tomcat\solrstuff\solr\filingcore\data\index\_yby.nrm' does not > exist > at org.apache.commons.io.FileUtils.copyFile(FileUtils.java:637) > at > org.apache.commons.io.FileUtils.copyFileToDirectory(FileUtils.java:587) > at > org.apache.solr.handler.SnapShooter.createSnapshot(SnapShooter.java:83) > at org.apache.solr.handler.SnapShooter$1.run(SnapShooter.java:61) > {code} -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.