"failed to merge" errors

Hi Everyone,

We have a cluster of 3 servers with 5 indices each with 5 shards and 1
replica, we have been experiencing some weird error, this is taken from the
logs:

[2013-08-12 15:02:42,156][WARN ][index.merge.scheduler ] [Strongarm]
[index3][3] failed to merge
java.io.FileNotFoundException: _10va_e.del
at
org.elasticsearch.index.store.Store$StoreDirectory.fileLength(Store.java:448)
at org.apache.lucene.index.SegmentInfo.sizeInBytes(SegmentInfo.java:303)
at
org.apache.lucene.index.MergePolicy$OneMerge.totalBytesSize(MergePolicy.java:174)
at
org.apache.lucene.index.TrackingConcurrentMergeScheduler.doMerge(TrackingConcurrentMergeScheduler.java:81)
at
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:456)

Once this error happens the affected index cannot receive new documents to
be indexed, we have to restart the server in order for the server to work
again,
We are running ES "0.19.11", with

Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)

Can anyone point us in the right direction on how to solve this?

Thanks!

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I think what you are seeing is a result of this lucene bug:

https://issues.apache.org/jira/browse/LUCENE-3051

it has been fixed eventually
here: https://issues.apache.org/jira/browse/LUCENE-4775

afaik all 0.19 releases are prone to this bug. I can only recommend to move
to a newer version of ES preferably to 0.90

simon

On Wednesday, August 14, 2013 11:50:32 PM UTC+2, J. Mora wrote:

Hi Everyone,

We have a cluster of 3 servers with 5 indices each with 5 shards and 1
replica, we have been experiencing some weird error, this is taken from the
logs:

[2013-08-12 15:02:42,156][WARN ][index.merge.scheduler ] [Strongarm]
[index3][3] failed to merge
java.io.FileNotFoundException: _10va_e.del
at
org.elasticsearch.index.store.Store$StoreDirectory.fileLength(Store.java:448)
at org.apache.lucene.index.SegmentInfo.sizeInBytes(SegmentInfo.java:303)
at
org.apache.lucene.index.MergePolicy$OneMerge.totalBytesSize(MergePolicy.java:174)
at
org.apache.lucene.index.TrackingConcurrentMergeScheduler.doMerge(TrackingConcurrentMergeScheduler.java:81)
at
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:456)

Once this error happens the affected index cannot receive new documents to
be indexed, we have to restart the server in order for the server to work
again,
We are running ES "0.19.11", with

Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)

Can anyone point us in the right direction on how to solve this?

Thanks!

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