org.elasticsearch.index.engine.FlushFailedEngineException

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Jae
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org.elasticsearch.index.engine.FlushFailedEngineException

Jae
I am running elasticsearch 0.19.9 with 36 instances. I saw the following exceptions. Is it safe to be ignored? Otherwise, how can I tune the parameter?

[2012-09-25 17:40:26,436][WARN ][index.translog           ] [Archimage] [request_trace20120925][0] failed to flush shard on translog threshold
org.elasticsearch.index.engine.FlushFailedEngineException: [request_trace20120925][0] Flush failed
        at org.elasticsearch.index.engine.robin.RobinEngine.flush(RobinEngine.java:903)
        at org.elasticsearch.index.shard.service.InternalIndexShard.flush(InternalIndexShard.java:467)
        at org.elasticsearch.index.translog.TranslogService$TranslogBasedFlush$1.run(TranslogService.java:191)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException
        at org.elasticsearch.common.compress.BufferRecycler.releaseEncodeBuffer(BufferRecycler.java:68)
        at org.elasticsearch.common.compress.lzf.ChunkEncoder.close(ChunkEncoder.java:113)
        at org.elasticsearch.common.compress.lzf.LZFCompressedIndexOutput.doClose(LZFCompressedIndexOutput.java:63)
        at org.elasticsearch.common.compress.CompressedIndexOutput.close(CompressedIndexOutput.java:184)
        at org.elasticsearch.index.store.Store$StoreIndexOutput.close(Store.java:645)
        at org.apache.lucene.util.IOUtils.close(IOUtils.java:141)
        at org.apache.lucene.index.FieldsWriter.close(FieldsWriter.java:139)
        at org.apache.lucene.index.StoredFieldsWriter.flush(StoredFieldsWriter.java:55)
        at org.apache.lucene.index.DocFieldProcessor.flush(DocFieldProcessor.java:59)
        at org.apache.lucene.index.DocumentsWriter.flush(DocumentsWriter.java:581)
        at org.apache.lucene.index.IndexWriter.doFlush(IndexWriter.java:3587)        at org.apache.lucene.index.IndexWriter.prepareCommit(IndexWriter.java:3376)
        at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:3485)
        at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:3467)
        at org.elasticsearch.index.engine.robin.RobinEngine.flush(RobinEngine.java:871)
        ... 5 more

Thank you
Best, Jae

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