Would this be costlier than a fssync (filesystem) of the index folder from the primary site to the backup site. How is it different from a normal file sync operation). Would there be any data consistency issues ?
One option, is to incrementally reindex the files on primary site to replicate the index of the primary site to the back up site. But, other than this, does Lucene 2.0 provide any facility of replicating master index on a backup site ? please let me know. Divya. -----Original Message----- From: Otis Gospodnetic [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 10, 2007 10:03 PM To: java-user@lucene.apache.org Subject: Re: Copy index while updating the index Here is one way to do it: You can read/open an index at any point, even when it's being modified. You can then open a new FSDirectory pointing to a new directory and add your original FSDirectory to that new FSDirectory. That will copy the index. Of course, any new documents you add to the original index after you've opened it will not be copied. The same goes for any documents that were still buffered in memory when you opened the index, and were not yet flushed to disk. See also: http://www.mail-archive.com/[EMAIL PROTECTED]/msg12709.html Otis ----- Original Message ---- From: "Rajendranath, Divya" <[EMAIL PROTECTED]> To: java-user@lucene.apache.org Sent: Tuesday, April 10, 2007 12:06:12 PM Subject: Copy index while updating the index Hello, I have a scenario, where we need to set up our application, that uses Lucene (and has on-demand indexing of documents) in Disaster-recovery site. The simple files/attachments used by our application can be simply copied to the DR site just by syncing (manual copying). Yes, we can also copy the index directory, but problem arises when we have copy the index directory, while the index directory is being updated, that means the Index is open. Wont this corrupt the index directory. Does Lucene 2.0 have support for copying opened index directory, without corrupting it. Please do let me know. Thanks, Divya. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
