Cluster not connected

[dubul]

Kibana shows Request Timeout after 30000ms and I see errors in elastic search

Caused by: java.nio.file.AccessDeniedException: E:\data\dc1elkprd\nodes\0\indices\application_logs-2017.01.04\2\index_3h9.cfe
at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:83)
at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97)
at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102)
at sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:53)
at sun.nio.fs.WindowsFileAttributeViews$Basic.readAttributes(WindowsFileAttributeViews.java:38)
at sun.nio.fs.WindowsFileSystemProvider.readAttributes(WindowsFileSystemProvider.java:193)
at java.nio.file.Files.readAttributes(Files.java:1737)
at java.nio.file.Files.size(Files.java:2332)
at org.apache.lucene.store.FSDirectory.fileLength(FSDirectory.java:210)
at org.apache.lucene.store.FilterDirectory.fileLength(FilterDirectory.java:67)
at org.apache.lucene.store.FilterDirectory.fileLength(FilterDirectory.java:67)
at org.elasticsearch.index.store.Store$StoreStatsCache.estimateSize(Store.java:1541)
at org.elasticsearch.index.store.Store$StoreStatsCache.refresh(Store.java:1530)
... 17 more

I have never seen this error and i'm new to elastic search. Can anyone help why this erroring out, It was working fine for 3-4 months and now I see this error.

[jasontedor]

It's a filesystem permissions problem.

[dubul]

@jasontedor File permissions have not been changed. When I look into this path E:\data\dc1elkprd\nodes\0\indices\application_logs-2017.01.04\2\index_3h9.cfe. I don't see the _3h9.cfe file is that reason its failing, how can I fix it?

[jasontedor]

That would manifest as a FileNotFoundException.