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SOLR-686: single lock factory overwrites previous (multicore reload corruption possibility)_ 

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@684339 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yonik Seeley 2008-08-09 20:34:35 +00:00
parent 0084c7e57c
commit 8e0503b667
2 changed files with 11 additions and 10 deletions
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8
example/solr/conf/solrconfig.xml
View File

@ -88,12 +88,14 @@
specify one of the other Lucene LockFactory implementations in
the event that you have a custom situation.
none = NoLockFactory (typically only used with read only indexes)
single = SingleInstanceLockFactory (suggested)
single = SingleInstanceLockFactory - suggested for a read-only index
or if there is no possibility of another process trying
to modify the index.
native = NativeFSLockFactory
simple = SimpleFSLockFactory
('simple' is the default for backwards compatibility with Solr 1.2)
(For backwards compatibility with Solr 1.2, 'single' is the default
if not specified.)
-->
<lockType>single</lockType>
</indexDefaults>

13
src/java/org/apache/solr/update/SolrIndexWriter.java
View File

@ -21,12 +21,7 @@ import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.MergePolicy;
import org.apache.lucene.index.MergeScheduler;
import org.apache.lucene.index.LogMergePolicy;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.NativeFSLockFactory;
import org.apache.lucene.store.NoLockFactory;
import org.apache.lucene.store.SimpleFSLockFactory;
import org.apache.lucene.store.SingleInstanceLockFactory;
import org.apache.lucene.store.*;
import org.apache.solr.common.SolrException;
import org.apache.solr.schema.IndexSchema;
@ -94,12 +89,16 @@ public class SolrIndexWriter extends IndexWriter {
final String lockType = rawLockType.toLowerCase().trim();
if ("simple".equals(lockType)) {
// multiple SimpleFSLockFactory instances should be OK
d.setLockFactory(new SimpleFSLockFactory(path));
} else if ("native".equals(lockType)) {
d.setLockFactory(new NativeFSLockFactory(path));
} else if ("single".equals(lockType)) {
d.setLockFactory(new SingleInstanceLockFactory());
if (!(d.getLockFactory() instanceof SingleInstanceLockFactory))
d.setLockFactory(new SingleInstanceLockFactory());
} else if ("none".equals(lockType)) {
// recipie for disaster
log.severe("CONFIGURATION WARNING: locks are disabled on " + path);
d.setLockFactory(new NoLockFactory());
} else {
throw new SolrException(SolrException.ErrorCode.SERVER_ERROR,