topic Re: FULL Reindex OutOfMemory in Alfresco Archive

FULL Reindex OutOfMemory

luca — Fri, 10 Feb 2012 11:25:40 GMT

Hello,I'm tryng do do a FULL Reindex, but Alfresco run out of memory in an hour.In the repository there are 163041 documents that occupy 200GB and 429,598 to be reindex.I'm using Alfresco 3.2 and, when i do the reindex, the JVM has 8GB of memory. I set up this parameter in alfresco-global.propertie

Re: FULL Reindex OutOfMemory

openpj — Thu, 08 Mar 2012 07:58:31 GMT

Try to add the following JVM parameters:


-server -Xcomp -Xbatch -Xss1M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode
‍‍‍

It should allows you to finish the total reindex, I think that in the latest versions of Alfresco you don't need to add these parameters, but it could depend on your operating system and your JDK version and vendor.

Hope this helps.

Re: FULL Reindex OutOfMemory

luca — Fri, 13 Apr 2012 13:12:03 GMT

Thank you very much, I finally and SUCCESFULLY ended the full reindex!

Some numbers:
I started the reindex with 14GB of RAM using the properties suggested by OpenPj like this:
export JAVA_OPTS='-server -Xcomp -Xbatch -Xss1M -Xms14336m -Xmx14336m -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:MaxPermSize=128m'

There were 494,584 transactions to reindex and the whole process took 3 hours. The memory occupied remained under 70%.

Next step: upgrade from Alfresco 3.2 to Alfresco 4

In previous attempt to upgrade from Alfresco 3.2 to Alfresco 3.3 or Alfresco 3.4 I noticed that some documents were missing, maybe I did something wrong.
It is possible that this was due to some error in the indexes?