Lucene Re-index creates lots of empty data\document_library folders

[Michael Wall，修改在11 年前。]

I'm using LR 6.0.12 EE and 6.0.6 CE.

I recently performed a Re-Index of search with the Server Administration > Reindex all search indexes functionality in Liferay. Afterwards I noticed that thousands of EMPTY folders have been created within data\document_library\10132, created during the Re-indexing. Same thing in other LR 6.0.12 EE enviroment.

Same thing happens with my instances of 6.0.6 CE but far fewer folders (due to the amount of data).

Is this expected behaviour?

I don't have any Search / Lucene or Document Library properties in portal-ex.properties.

[David H Nebinger，修改在11 年前。]

Lucene manages a large search index, but over time the search tree can get out of balance (too many nodes on one side of the tree).

Reindexing will rebalance the tree and spread out the nodes to accommodate new growth.

Depending how much data your index may have, what you have noticed could be perfectly normal.

The only wrinkle that may be in the response, however, is your jdk. There are issues w/ lucene & jdk7, which is why jdk7 is not compatible w/ Liferay just yet. I don't know if jdk7 incompatibility results in all of the empty nodes, but if you are using jdk7 I'd switch back to oracle jdk 6.

[Michael Wall，修改在11 年前。]

Looks like it is a known bug: http://issues.liferay.com/browse/LPS-31848

[Hitoshi Ozawa，修改在11 年前。]

Since you're using EE, you should be able to get a patch to fix this problem. If you don't know where, contact Liferay.com about it instead of here because you've paid Liferay.com to provide you with a patch when you purchased the EE subscription.