# "failed to merge" errors **URL:** \ **Category:** Elasticsearch\ **Created:** [August 14, 2013, 9:50pm UTC](https://discuss.elastic.co/t/failed-to-merge-errors/13219 "2013-08-14T21:50:32Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![J\_Mora](https://avatars.discourse-cdn.com/v4/letter/j/c68b51/32.png) [@J\_Mora](https://discuss.elastic.co/u/J_Mora)\ **Post date:** [August 14, 2013, 9:50pm UTC](https://discuss.elastic.co/t/failed-to-merge-errors/13219/1 "2013-08-14T21:50:32Z")
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$MergeThread.run(ConcurrentMergeScheduler.java:456) Once this error happens the affected index cannot receive new documents to be indexed, we have to restart the server in order for the server to work again, We are running ES "0.19.11", with Java(TM) SE Runtime Environment (build 1.7.0\_21-b11) Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode) Can anyone point us in the right direction on how to solve this? Thanks! -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![simonw\_2](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/simonw_2/32/1130_2.png) [@simonw\_2](https://discuss.elastic.co/u/simonw_2)\ **Post date:** [August 15, 2013, 6:31pm UTC](https://discuss.elastic.co/t/failed-to-merge-errors/13219/2 "2013-08-15T18:31:38Z")
I think what you are seeing is a result of this lucene bug: [https://issues.apache.org/jira/browse/LUCENE-3051](https://issues.apache.org/jira/browse/LUCENE-3051) it has been fixed eventually here: [[LUCENE-4775] OneMerge.totalBytesSize is trappy - ASF JIRA](https://issues.apache.org/jira/browse/LUCENE-4775) afaik all 0.19 releases are prone to this bug. I can only recommend to move to a newer version of ES preferably to 0.90 simon On Wednesday, August 14, 2013 11:50:32 PM UTC+2, J. Mora wrote: > Hi Everyone, > > We have a cluster of 3 servers with 5 indices each with 5 shards and 1 > replica, we have been experiencing some weird error, this is taken from the > logs: > > [2013-08-12 15:02:42,156][WARN][index.merge.scheduler] [Strongarm] > [index3][3] failed to merge > java.io.FileNotFoundException: \_10va\_e.del > at > org.elasticsearch.index.store.Store$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! -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:20am UTC](https://discuss.elastic.co/t/failed-to-merge-errors/13219/3 "2017-07-06T02:20:58Z")