# Stack overflow in 5.6.2 after migration from 2.4.1
**URL:** https://discuss.elastic.co/t/stack-overflow-in-5-6-2-after-migration-from-2-4-1/103797
**Category:** Elasticsearch
**Created:** [October 12, 2017, 9:52pm UTC](https://discuss.elastic.co/t/stack-overflow-in-5-6-2-after-migration-from-2-4-1/103797 "2017-10-12T21:52:18Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@dmdklb](https://discuss.elastic.co/u/dmdklb)
#### Post date: [October 12, 2017, 9:52pm UTC](https://discuss.elastic.co/t/stack-overflow-in-5-6-2-after-migration-from-2-4-1/103797/1 "2017-10-12T21:52:18Z")
Hello
I am migrating an ELK stack from 2.4.1 to 5.6.2
I have installed ES 5.6.2 and restored from a snapshot
I have installed Kibana 5.6.2 and did a little bit of clicking around -very quickly, elasticsearch crashed with a stack overflow
log is below- how do i address this?
```
[2017-10-12T16:09:51,725][INFO][o.e.c.m.MetaDataMappingService] [ykkVtRI] [.kibana/gRvKfH_ORv6Zp9HcSHT1rQ] create_mapping [_default_]
[2017-10-12T16:09:51,817][INFO][o.e.c.m.MetaDataMappingService] [ykkVtRI] [.kibana/gRvKfH_ORv6Zp9HcSHT1rQ] create_mapping [url]
[2017-10-12T16:09:51,872][INFO][o.e.c.m.MetaDataMappingService] [ykkVtRI] [.kibana/gRvKfH_ORv6Zp9HcSHT1rQ] create_mapping [server]
[2017-10-12T16:09:51,917][INFO][o.e.c.m.MetaDataMappingService] [ykkVtRI] [.kibana/gRvKfH_ORv6Zp9HcSHT1rQ] create_mapping [timelion-sheet]
[2017-10-12T16:14:28,990][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [] fatal error in thread [elasticsearch[ykkVtRI][search][T#30]], exiting
java.lang.StackOverflowError: null
at org.elasticsearch.cluster.routing.PlainShardsIterator.remaining(PlainShardsIterator.java:50) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.successfulShardExecution(InitialSearchPhase.java:196) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.skipShard(InitialSearchPhase.java:323) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.AbstractSearchAsyncAction.skipShard(AbstractSearchAsyncAction.java:321) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.maybeExecuteNext(InitialSearchPhase.java:147) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.successfulShardExecution(InitialSearchPhase.java:207) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.skipShard(InitialSearchPhase.java:323) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.AbstractSearchAsyncAction.skipShard(AbstractSearchAsyncAction.java:321) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.maybeExecuteNext(InitialSearchPhase.java:147) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.successfulShardExecution(InitialSearchPhase.java:207) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.skipShard(InitialSearchPhase.java:323) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.AbstractSearchAsyncAction.skipShard(AbstractSearchAsyncAction.java:321) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.maybeExecuteNext(InitialSearchPhase.java:147) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.successfulShardExecution(InitialSearchPhase.java:207) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.skipShard(InitialSearchPhase.java:323) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.AbstractSearchAsyncAction.skipShard(AbstractSearchAsyncAction.java:321) ~[elasticsearch-5.6.2.jar:5.6.2]
[... snipped hundreds of identical lines ...]
at org.elasticsearch.action.search.InitialSearchPhase.successfulShardExecution(InitialSearchPhase.java:207) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.skipShard(InitialSearchPhase.java:323) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.AbstractSearchAsyncAction.skipShard(AbstractSearchAsyncAction.java:321) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.maybeExecuteNext(InitialSearchPhase.java:147) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.successfulShardExecution(InitialSearchPhase.java:207) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.InitialSearchPhase.skipShard(InitialSearchPhase.java:323) ~[elasticsearch-5.6.2.jar:5.6.2]
at org.elasticsearch.action.search.AbstractSearchAsyncAction.skipShard(AbstractSearchAsyncAction.java:321) ~[elasticsearch-5.6.2.jar:5.6.2]
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 9, 2017, 9:52pm UTC](https://discuss.elastic.co/t/stack-overflow-in-5-6-2-after-migration-from-2-4-1/103797/2 "2017-11-09T21:52:38Z")
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