It's the virtual memory limit that matters; yours says unlimited below
(good!), but, are you certain that's really the limit your Solr
process runs with?
On Linux, there is also a per-process map count:
cat /proc/sys/vm/max_map_count
I think it typically defaults to 65,536 but you should check on your
env. If a process tries to map more than this many regions, you'll
hit that exception.
I think you can:
cat /proc/<pid>/maps | wc
to see how many maps your Solr process currently has... if that is
anywhere near the limit then it could be the cause.
Mike McCandless
http://blog.mikemccandless.com
On Sat, Mar 31, 2012 at 1:26 AM, Gopal Patwa <gopalpa...@gmail.com> wrote:
> *I need help!!*
>
> *
> *
>
> *I am using Solr 4.0 nightly build with NRT and I often get this error
> during auto commit "**java.lang.OutOfMemoryError:* *Map* *failed". I
> have search this forum and what I found it is related to OS ulimit
> setting, please se below my ulimit settings. I am not sure what ulimit
> setting I should have? and we also get "**java.net.SocketException:*
> *Too* *many* *open* *files" NOT sure how many open file we need to
> set?*
>
>
> I have 3 core with index size : core1 - 70GB, Core2 - 50GB and Core3 -
> 15GB, with Single shard
>
> *
> *
>
> *We update the index every 5 seconds, soft commit every 1 second and
> hard commit every 15 minutes*
>
> *
> *
>
> *Environment: Jboss 4.2, JDK 1.6 , CentOS, JVM Heap Size = 24GB*
>
> *
> *
>
> ulimit:
>
> core file size (blocks, -c) 0
> data seg size (kbytes, -d) unlimited
> scheduling priority (-e) 0
> file size (blocks, -f) unlimited
> pending signals (-i) 401408
> max locked memory (kbytes, -l) 1024
> max memory size (kbytes, -m) unlimited
> open files (-n) 1024
> pipe size (512 bytes, -p) 8
> POSIX message queues (bytes, -q) 819200
> real-time priority (-r) 0
> stack size (kbytes, -s) 10240
> cpu time (seconds, -t) unlimited
> max user processes (-u) 401408
> virtual memory (kbytes, -v) unlimited
> file locks (-x) unlimited
>
>
> *
> *
>
> *ERROR:*
>
> *
> *
>
> *2012-03-29* *15:14:08*,*560* [] *priority=ERROR* *app_name=*
> *thread=pool-3-thread-1* *location=CommitTracker* *line=93* *auto*
> *commit* *error...:java.io.IOException:* *Map* *failed*
> *at* *sun.nio.ch.FileChannelImpl.map*(*FileChannelImpl.java:748*)
> *at*
> *org.apache.lucene.store.MMapDirectory$MMapIndexInput.*<*init*>(*MMapDirectory.java:293*)
> *at*
> *org.apache.lucene.store.MMapDirectory.openInput*(*MMapDirectory.java:221*)
> *at*
> *org.apache.lucene.codecs.lucene40.Lucene40PostingsReader.*<*init*>(*Lucene40PostingsReader.java:58*)
> *at*
> *org.apache.lucene.codecs.lucene40.Lucene40PostingsFormat.fieldsProducer*(*Lucene40PostingsFormat.java:80*)
> *at*
> *org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader$1.visitOneFormat*(*PerFieldPostingsFormat.java:189*)
> *at*
> *org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$VisitPerFieldFile.*<*init*>(*PerFieldPostingsFormat.java:280*)
> *at*
> *org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader$1.*<*init*>(*PerFieldPostingsFormat.java:186*)
> *at*
> *org.apache.lucene.codecs.perfield.PerFieldPostingsFormat$FieldsReader.*<*init*>(*PerFieldPostingsFormat.java:186*)
> *at*
> *org.apache.lucene.codecs.perfield.PerFieldPostingsFormat.fieldsProducer*(*PerFieldPostingsFormat.java:256*)
> *at*
> *org.apache.lucene.index.SegmentCoreReaders.*<*init*>(*SegmentCoreReaders.java:108*)
> *at*
> *org.apache.lucene.index.SegmentReader.*<*init*>(*SegmentReader.java:51*)
> *at*
> *org.apache.lucene.index.IndexWriter$ReadersAndLiveDocs.getReader*(*IndexWriter.java:494*)
> *at*
> *org.apache.lucene.index.BufferedDeletesStream.applyDeletes*(*BufferedDeletesStream.java:214*)
> *at*
> *org.apache.lucene.index.IndexWriter.applyAllDeletes*(*IndexWriter.java:2939*)
> *at*
> *org.apache.lucene.index.IndexWriter.maybeApplyDeletes*(*IndexWriter.java:2930*)
> *at*
> *org.apache.lucene.index.IndexWriter.prepareCommit*(*IndexWriter.java:2681*)
> *at*
> *org.apache.lucene.index.IndexWriter.commitInternal*(*IndexWriter.java:2804*)
> *at*
> *org.apache.lucene.index.IndexWriter.commit*(*IndexWriter.java:2786*)
> *at*
> *org.apache.solr.update.DirectUpdateHandler2.commit*(*DirectUpdateHandler2.java:391*)
> *at*
> *org.apache.solr.update.CommitTracker.run*(*CommitTracker.java:197*)
> *at*
> *java.util.concurrent.Executors$RunnableAdapter.call*(*Executors.java:441*)
> *at*
> *java.util.concurrent.FutureTask$Sync.innerRun*(*FutureTask.java:303*)
> *at* *java.util.concurrent.FutureTask.run*(*FutureTask.java:138*)
> *at*
> *java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301*(*ScheduledThreadPoolExecutor.java:98*)
> *at*
> *java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run*(*ScheduledThreadPoolExecutor.java:206*)
> *at*
> *java.util.concurrent.ThreadPoolExecutor$Worker.runTask*(*ThreadPoolExecutor.java:886*)
> *at*
> *java.util.concurrent.ThreadPoolExecutor$Worker.run*(*ThreadPoolExecutor.java:908*)
> *at* *java.lang.Thread.run*(*Thread.java:662*)*Caused* *by:*
> *java.lang.OutOfMemoryError:* *Map* *failed*
> *at* *sun.nio.ch.FileChannelImpl.map0*(*Native* *Method*)
> *at* *sun.nio.ch.FileChannelImpl.map*(*FileChannelImpl.java:745*)
> *...* *28* *more*
>
> *
> *
>
> *
> *
>
> *
>
>
> SolrConfig.xml:
>
>
> <indexDefaults>
> <useCompoundFile>false</useCompoundFile>
> <mergeFactor>10</mergeFactor>
> <maxMergeDocs>2147483647</maxMergeDocs>
> <maxFieldLength>10000</maxFieldLength-->
> <ramBufferSizeMB>4096</ramBufferSizeMB>
> <maxThreadStates>10</maxThreadStates>
> <writeLockTimeout>1000</writeLockTimeout>
> <commitLockTimeout>10000</commitLockTimeout>
> <lockType>single</lockType>
>
> <mergePolicy class="org.apache.lucene.index.TieredMergePolicy">
> <double name="forceMergeDeletesPctAllowed">0.0</double>
> <double name="reclaimDeletesWeight">10.0</double>
> </mergePolicy>
>
> <deletionPolicy class="solr.SolrDeletionPolicy">
> <str name="keepOptimizedOnly">false</str>
> <str name="maxCommitsToKeep">0</str>
> </deletionPolicy>
>
> </indexDefaults>
>
>
> <updateHandler class="solr.DirectUpdateHandler2">
> <maxPendingDeletes>1000</maxPendingDeletes>
> <autoCommit>
> <maxTime>900000</maxTime>
> <openSearcher>false</openSearcher>
> </autoCommit>
> <autoSoftCommit>
> <maxTime>${inventory.solr.softcommit.duration:1000}</maxTime>
> </autoSoftCommit>
>
> </updateHandler>
>
>
>
> Thanks
> Gopal Patwa
> *
