Getting "UnavailableShardsException" sometimes only

Hi,

I am creating elasticsearch index using java with elasticsearch-2.2.0 version. I am stuckup with an exception: "UnavailableShardsException"
I am using BULK API to create my index. Some times the index is being created successfully, some times I am getting the above exception.

I am wondering why this exception is coming only sometimes. This is causing me a big problem.

Can anyone help me please?

Thanks & Regards,
Samanth

Can anyone please respond?

Thanks,
Samanth

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Have you checked your ES logs at the time this happens?

Thank You! I checked the logs but I am not able to understand the exact problem. Please find the log file content below:

[2016-05-11 03:20:05,157][DEBUG][action.admin.indices.stats] [Crazy Eight] [indices:monitor/stats] failed to execute operation for shard [[enduser][3], node[g60DVR92SseMGM69vgbzXQ], [P], v[2], s[STARTED], a[id=Myk36WGeQ8S92exXvDcjcg]]
ElasticsearchException[failed to refresh store stats]; nested: AccessDeniedException[C:\elasticsearch-2.2.0\data\elasticsearch\nodes\0\indices\enduser\3\index_c_Lucene50_0.tim];
at org.elasticsearch.index.store.Store$StoreStatsCache.refresh(Store.java:1534)
at org.elasticsearch.index.store.Store$StoreStatsCache.refresh(Store.java:1519)
at org.elasticsearch.common.util.SingleObjectCache.getOrRefresh(SingleObjectCache.java:55)
at org.elasticsearch.index.store.Store.stats(Store.java:293)
at org.elasticsearch.index.shard.IndexShard.storeStats(IndexShard.java:665)
at org.elasticsearch.action.admin.indices.stats.CommonStats.(CommonStats.java:134)
at org.elasticsearch.action.admin.indices.stats.TransportIndicesStatsAction.shardOperation(TransportIndicesStatsAction.java:165)
at org.elasticsearch.action.admin.indices.stats.TransportIndicesStatsAction.shardOperation(TransportIndicesStatsAction.java:47)
at org.elasticsearch.action.support.broadcast.node.TransportBroadcastByNodeAction$BroadcastByNodeTransportRequestHandler.onShardOperation(TransportBroadcastByNodeAction.java:409)
at org.elasticsearch.action.support.broadcast.node.TransportBroadcastByNodeAction$BroadcastByNodeTransportRequestHandler.messageReceived(TransportBroadcastByNodeAction.java:388)
at org.elasticsearch.action.support.broadcast.node.TransportBroadcastByNodeAction$BroadcastByNodeTransportRequestHandler.messageReceived(TransportBroadcastByNodeAction.java:375)
at org.elasticsearch.transport.TransportService$4.doRun(TransportService.java:350)
at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.file.AccessDeniedException: C:\elasticsearch-2.2.0\data\elasticsearch\nodes\0\indices\enduser\3\index_c_Lucene50_0.tim
at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:83)

... 15 more
[2016-05-11 03:46:25,196][INFO ][cluster.metadata ] [Crazy Eight] [enduser] creating index, cause [api], templates [], shards [5]/[1], mappings []
[2016-05-11 03:46:25,222][WARN ][indices.cluster ] [Crazy Eight] [[enduser][2]] marking and sending shard failed due to [failed recovery]
[enduser][[enduser][2]] IndexShardRecoveryException[failed to recovery from gateway]; nested: EngineCreationFailureException[failed to create engine]; nested: AccessDeniedException[C:\elasticsearch-2.2.0\data\elasticsearch\nodes\0\indices\enduser\2\translog];
at org.elasticsearch.index.shard.StoreRecoveryService.recoverFromStore(StoreRecoveryService.java:254)
at org.elasticsearch.index.shard.StoreRecoveryService.access$100(StoreRecoveryService.java:56)
at org.elasticsearch.index.shard.StoreRecoveryService$1.run(StoreRecoveryService.java:129)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: [enduser][[enduser][2]] EngineCreationFailureException[failed to create engine]; nested: AccessDeniedException[C:\elasticsearch-2.2.0\data\elasticsearch\nodes\0\indices\enduser\2\translog];
at org.elasticsearch.index.engine.InternalEngine.(InternalEngine.java:156)
at org.elasticsearch.index.engine.InternalEngineFactory.newReadWriteEngine(InternalEngineFactory.java:25)
at org.elasticsearch.index.shard.IndexShard.newEngine(IndexShard.java:1450)
at org.elasticsearch.index.shard.IndexShard.createNewEngine(IndexShard.java:1434)
at org.elasticsearch.index.shard.IndexShard.internalPerformTranslogRecovery(IndexShard.java:925)
at org.elasticsearch.index.shard.IndexShard.performTranslogRecovery(IndexShard.java:897)
at org.elasticsearch.index.shard.StoreRecoveryService.recoverFromStore(StoreRecoveryService.java:245)
... 5 more

Looks like filesystem permission issues.

I do not understand one thing that is: it is loading the data sometimes successfully, but it is failing sometimes. I am wondering how it is possible. I am using BATCH API to load the data.

Client Side Exception:

[172]: index [enduser], type [enduser], id [AVS4BSH5OtU25o4f73iq], message [UnavailableShardsException[[enduser][3] primary shard is not active Timeout: [1m], request: [shard bulk {[enduser][3]}]]]

Is there any configuration that needs to be done?.

Thanks,
Samanth

I'm seeing the same thing you are. An index will be fine for weeks and then one day we get access denied errors. Frustrating.

This post indicates it can be an issue on Windows where you open Explorer on a different machine and navigate to the network drive housing your ES data. I closed all my connections from other workstations to that network drive. Maybe it will work.