Elasticsearch Shard stuck in INITIALIZING state

Posted by Peeyush on Stack Overflow See other posts from Stack Overflow or by Peeyush
Published on 2014-08-21T04:07:57Z Indexed on 2014/08/21 4:20 UTC
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elasticsearch

I stopped one of my elastic search node & as a normal behavior elastic search started relocating my shard on that node to another node.

But even after 15 hours it is still stuck in INITIALIZING state. Also that shard is fluctuating between two nodes,for some time it stays on one node then automatically shift to another node & keep on doing that after every few hours.

Main issue is it is still in INITIALIZING state after so many hours.

I am using version 1.2.1.

This shard which is stuck, it is a replica.

I am getting this error in logs:

[ERROR][index.engine.internal    ] [mynode] [myindex][3] failed to acquire searcher, source delete_by_query
java.lang.NullPointerException
[WARN ][index.engine.internal    ] [mynode] [myindex][3] failed engine [deleteByQuery/shard failed on replica]
[WARN ][cluster.action.shard     ] [mynode] [myindex][3] sending failed shard for [myindex][3], node[Sp3URfNVQlq2i4i3EjCakw], [R], s[INITIALIZING], indexUUID [kTikCHshQMKEQ_jAuWWWnw], reason [engine failure, message [deleteByQuery/shard failed on replica][EngineException[[myindex][3] failed to acquire searcher, source delete_by_query]; nested: NullPointerException; ]]

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