Briefly, this error occurs when Elasticsearch snapshots are deleted either manually or automatically due to retention policies. Snapshots are backups of your data and their deletion can lead to data loss. To resolve this issue, you can 1) Ensure proper snapshot retention policies are in place to avoid automatic deletion. 2) Regularly monitor your snapshot repository to avoid manual deletion. 3) Implement a backup strategy for your snapshots to another secure location. 4) Use Elasticsearch’s snapshot and restore module to recover deleted snapshots if they were recently deleted.
This guide will help you check for common problems that cause the log ” snapshots {} deleted ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “snapshots {} deleted” classname is SnapshotsService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
private final ListenableFuture doneFuture = new ListenableFuture();
@Override
public void onDone() {
logger.info("snapshots {} deleted"; snapshotIds);
doneFuture.onResponse(null);
}
@Override
public void onRepositoryDataWritten(RepositoryData updatedRepoData) {
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