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Vassil Zorev commented on LUCENE-4870: -------------------------------------- Hello, Lucene team, My team and I are currently running a quite old version of the lucene-core library - 3.0.0. As part of our internal memory optimization fixes, we are also planning to migrate to newer version. Research so far brought me to think our best risk-benefit trade off is Lucene 3.6.2. (We are planning to go to the 4.X branch - current development, but that would perhaps come in our own major version upgrade) However, due to this here issue, I would really like to know which version of the core library does not have it? 3.6.1 perhaps? Or 3.5.X? As I understand from your comments, you are not yet planning to provide a fix on the 3.6.X branch - please advise to which version we should migrate where this bug is not present? Thank you very much! Vassil Zorev, web developer > Lucene deletes entire index if and exception is thrown due do > TooManyOpenFiles and OpenMode.CREATE_OR_APPEND > ------------------------------------------------------------------------------------------------------------ > > Key: LUCENE-4870 > URL: https://issues.apache.org/jira/browse/LUCENE-4870 > Project: Lucene - Core > Issue Type: Bug > Affects Versions: 4.0, 4.1, 4.2, 3.6.2 > Reporter: Simon Willnauer > Assignee: Simon Willnauer > Priority: Blocker > Fix For: 5.0, 4.3, 4.2.1 > > Attachments: LUCENE-4870.patch, LUCENE-4870.patch, LUCENE-4870.patch > > > The Lucene IndexWriter might delete an entire index if it hits a > FileNotFoundException triggered by TooManyOpenFiles during IndexWriter > creation. We try to figure out if the index exists already if the > OpenMode.CREATE_OR_APPEND is set (which is default). Yet, the logic in > DirectoryReader#indexExists(Directory) will just return false if we are not > able to open the segment file. This will cause the IW to assume there is no > index and it will try to create a new index there trashing all existing > commit points treating this as a OpenMode.CREATE. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org