Solr stopped with Error opening new searcher at org.apache.solr.core

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Yesterday suddenly our solr server got stopped with following exception

org.apache.solr.common.SolrException: Error opening new searcher at org.apache.solr.core.SolrCore.openNewSearcher(SolrCore.java:1438) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1550) at org.apache.solr.core.SolrCore.getSearcher(SolrCore.java:1319) at org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:574) at org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:95) at org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64) at org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1147) at org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:157) at org.apache.solr.handler.loader.XMLLoader.processUpdate(XMLLoader.java:266) at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:173) at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:92)

Caused by: java.io.IOException: Map failed at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:889) at org.apache.lucene.store.MMapDirectory.map(MMapDirectory.java:283) at org.apache.lucene.store.MMapDirectory$MMapIndexInput.

But at that time we have lot of memory left in that server. Any guess?

3

There are 3 answers

1
jay On

Assuming its a linux system you can try ulimit -v unlimited

Check the below links for more information.

https://support.lucidworks.com/hc/en-us/articles/206127457-Caused-by-java-io-IOException-Map-failed

https://stackoverflow.com/a/8893684/689625

You will get answers much faster if you include more information, like the version of your software (in this case solr version), OS Name and version, Java version etc.

0
Hany Sakr On

The flag -fix didn't work in my later version, instead I used exorcise

java -cp lucene-core-5.5.0.jar -ea:org.apache.lucene... org.apache.lucene.index.CheckIndex PATH_TO_INDEX -exorcise

I hope this could help.

0
Nifle On

I got this error:

Error creating core [mm_shard1_replica1]: Error opening new searcher

and tried fiddling with ulimit and max_map_count

In the end it turned out to be a bad error message because the problem turned out to be a corrupt index.

Fixed it by shutting down solr and doing this:

cd /var/lib/solr/example/solr-webapp/webapp/WEB-INF/lib
java -cp lucene-core-4.10.4.jar -ea:org.apache.lucene... org.apache.lucene.index.CheckIndex /path/to/index -fix

To just check wether the index is broken remove the -fix at the end of above command. After that I started up solr and it recreated its index from the rest of the solrcloud cluster.