public interface DeleteOrphanFiles extends Action<DeleteOrphanFiles,DeleteOrphanFiles.Result>
A metadata or data file is considered orphan if it is not reachable by any valid snapshot. The set of actual files is built by listing the underlying storage which makes this operation expensive.
| Modifier and Type | Interface and Description |
|---|---|
static interface |
DeleteOrphanFiles.Result
The action result that contains a summary of the execution.
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| Modifier and Type | Method and Description |
|---|---|
DeleteOrphanFiles |
deleteWith(java.util.function.Consumer<java.lang.String> deleteFunc)
Passes an alternative delete implementation that will be used for orphan files.
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DeleteOrphanFiles |
executeDeleteWith(java.util.concurrent.ExecutorService executorService)
Passes an alternative executor service that will be used for removing orphaned files.
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DeleteOrphanFiles |
location(java.lang.String location)
Passes a location which should be scanned for orphan files.
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DeleteOrphanFiles |
olderThan(long olderThanTimestamp)
Removes orphan files only if they are older than the given timestamp.
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DeleteOrphanFiles location(java.lang.String location)
If not set, the root table location will be scanned potentially removing both orphan data and metadata files.
location - the location where to look for orphan filesDeleteOrphanFiles olderThan(long olderThanTimestamp)
This is a safety measure to avoid removing files that are being added to the table. For example, there may be a concurrent operation adding new files while this action searches for orphan files. New files may not be referenced by the metadata yet but they are not orphan.
If not set, defaults to a timestamp 3 days ago.
olderThanTimestamp - a long timestamp, as returned by System.currentTimeMillis()DeleteOrphanFiles deleteWith(java.util.function.Consumer<java.lang.String> deleteFunc)
This method allows users to customize the delete func. For example, one may set a custom delete func and collect all orphan files into a set instead of physically removing them.
If not set, defaults to using the table's io implementation.
deleteFunc - a function that will be called to delete filesDeleteOrphanFiles executeDeleteWith(java.util.concurrent.ExecutorService executorService)
If this method is not called, orphaned manifests and data files will still be deleted in the current thread.
executorService - the service to use