ElasticSearch fails to backup certain indices

Messages in log file:

[2016-10-18 13:03:50,925][WARN ][snapshots ] [cr1-elk-211-staging201] [[solrsearch-2016.09.26][2]] [staging201:solrsearch-2016.09.26] failed to create snapshot
org.elasticsearch.index.snapshots.IndexShardSnapshotFailedException: [solrsearch-2016.09.26][2] failed to list blobs
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository$SnapshotContext.snapshot(BlobStoreIndexShardRepository.java:442)
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository.snapshot(BlobStoreIndexShardRepository.java:140)
at org.elasticsearch.index.snapshots.IndexShardSnapshotAndRestoreService.snapshot(IndexShardSnapshotAndRestoreService.java:85)
at org.elasticsearch.snapshots.SnapshotsService$5.run(SnapshotsService.java:871)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.file.NoSuchFileException: /backups/staging201/indices/solrsearch-2016.09.26/2
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.java:427)
at java.nio.file.Files.newDirectoryStream(Files.java:457)
at java.nio.file.Files.newDirectoryStream(Files.java:514)
at org.elasticsearch.common.blobstore.fs.FsBlobContainer.listBlobsByPrefix(FsBlobContainer.java:65)
at org.elasticsearch.common.blobstore.fs.FsBlobContainer.listBlobs(FsBlobContainer.java:56)
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository$SnapshotContext.snapshot(BlobStoreIndexShardRepository.java:440)
... 6 more
[2016-10-18 13:03:50,956][WARN ][snapshots ] [cr1-elk-211-staging201] [[solrsearch-2016.09.26][1]] [staging201:solrsearch-2016.09.26] failed to create snapshot
org.elasticsearch.index.snapshots.IndexShardSnapshotFailedException: [solrsearch-2016.09.26][1] failed to list blobs
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository$SnapshotContext.snapshot(BlobStoreIndexShardRepository.java:442)
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository.snapshot(BlobStoreIndexShardRepository.java:140)
at org.elasticsearch.index.snapshots.IndexShardSnapshotAndRestoreService.snapshot(IndexShardSnapshotAndRestoreService.java:85)
at org.elasticsearch.snapshots.SnapshotsService$5.run(SnapshotsService.java:871)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.file.NoSuchFileException: /backups/staging201/indices/solrsearch-2016.09.26/1
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.java:427)
at java.nio.file.Files.newDirectoryStream(Files.java:457)
at java.nio.file.Files.newDirectoryStream(Files.java:514)
at org.elasticsearch.common.blobstore.fs.FsBlobContainer.listBlobsByPrefix(FsBlobContainer.java:65)
at org.elasticsearch.common.blobstore.fs.FsBlobContainer.listBlobs(FsBlobContainer.java:56)
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository$SnapshotContext.snapshot(BlobStoreIndexShardRepository.java:440)
... 6 more
[2016-10-18 13:03:50,969][WARN ][snapshots ] [cr1-elk-211-staging201] [[solrsearch-2016.09.26][3]] [staging201:solrsearch-2016.09.26] failed to create snapshot
org.elasticsearch.index.snapshots.IndexShardSnapshotFailedException: [solrsearch-2016.09.26][3] failed to list blobs
[ at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository$SnapshotContext.snapshot(BlobStoreIndexShardRepository.java:442)
at org.elasticsearch.index.snapshots.blobstore.BlobStoreIndexShardRepository.snapshot(BlobStoreIndexShardRepository.java:140)
at org.elasticsearch.index.snapshots.IndexShardSnapshotAndRestoreService.snapshot(IndexShardSnapshotAndRestoreService.java:85)
at org.elasticsearch.snapshots.SnapshotsService$5.run(SnapshotsService.java:871)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.file.NoSuchFileException: /backups/staging201/indices/solrsearch-2016.09.26/3
...truncated...