org.apache.lucene.store.NoSuchDirectoryException: directory '/xxx/xxx' does not exist in EPP

Issue

• This error is occurring on one of our production nodes ever few seconds:

ERROR [exo.jcr.component.core.MultiIndex] (MultiIndex Flush Timer) Unable to commit volatile index
org.apache.lucene.store.NoSuchDirectoryException: directory '/jas/idxshare/gatein/jcr/lucene/portal-system_commdash/_7b' does not exist
    at org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:516)
    at org.apache.lucene.store.FSDirectory.listAll(FSDirectory.java:543)
    at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:564)
    at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:517)
    at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:306)
    at org.apache.lucene.index.SegmentInfos.readCurrentVersion(SegmentInfos.java:408)
    at org.apache.lucene.index.DirectoryReader.isCurrent(DirectoryReader.java:800)
    at org.apache.lucene.index.FilterIndexReader.isCurrent(FilterIndexReader.java:241)
    at org.exoplatform.services.jcr.impl.core.query.lucene.AbstractIndex.getIndexReader(AbstractIndex.java:260)
    at org.exoplatform.services.jcr.impl.core.query.lucene.PersistentIndex.getNumDocuments(PersistentIndex.java:176)
    at org.exoplatform.services.jcr.impl.core.query.lucene.MultiIndex$8.run(MultiIndex.java:1571)
    at org.exoplatform.services.jcr.impl.core.query.lucene.MultiIndex$8.run(MultiIndex.java:1549)
    at org.exoplatform.commons.utils.SecurityHelper.doPrivilegedExceptionAction(SecurityHelper.java:309)
    at org.exoplatform.commons.utils.SecurityHelper.doPrivilegedIOExceptionAction(SecurityHelper.java:56)
    at org.exoplatform.services.jcr.impl.core.query.lucene.MultiIndex.flush(MultiIndex.java:1548)
    at org.exoplatform.services.jcr.impl.core.query.lucene.MultiIndex.checkFlush(MultiIndex.java:2098)
    at org.exoplatform.services.jcr.impl.core.query.lucene.MultiIndex.access$2400(MultiIndex.java:101)
    at org.exoplatform.services.jcr.impl.core.query.lucene.MultiIndex$9.run(MultiIndex.java:1683)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)

• It only occurs when I start editing something in the first node.