I saw this exception in my log. What can caused this? java.lang.IllegalArgumentException: Seeking to negative position: MMapIndexInput(path="/opt/solr/node/collections/2016_shard9_replica2/data/index/_0.fdx") at org.apache.lucene.store.ByteBufferIndexInput$SingleBufferImpl.seek(ByteBufferIndexInput.java:407) at org.apache.lucene.codecs.CodecUtil.retrieveChecksum(CodecUtil.java:400) at org.apache.solr.handler.IndexFetcher.compareFile(IndexFetcher.java:843) at org.apache.solr.handler.IndexFetcher.isIndexStale(IndexFetcher.java:914) at org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:376) at org.apache.solr.handler.IndexFetcher.fetchLatestIndex(IndexFetcher.java:254) at org.apache.solr.handler.ReplicationHandler.doFetch(ReplicationHandler.java:380) at org.apache.solr.cloud.RecoveryStrategy.replicate(RecoveryStrategy.java:162) at org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:437) at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:227) Caused by: java.lang.IllegalArgumentException at java.nio.Buffer.position(Buffer.java:244) at org.apache.lucene.store.ByteBufferIndexInput$SingleBufferImpl.seek(ByteBufferIndexInput.java:404) ... 9 more
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