THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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/** * This interface provides storing and fetching remote log segment metadata with strongly consistent semantics. * */ @InterfaceStability.Unstable public interface RemoteLogMetadataManager extends Configurable, Closeable { /** * Stores RemoteLogSegmentMetadata for the given RemoteLogSegmentMetadata. * * @param remoteLogSegmentId * @param remoteLogSegmentMetadata * @throws IOException */ void putRemoteLogSegmentData(RemoteLogSegmentId remoteLogSegmentId, RemoteLogSegmentMetadata remoteLogSegmentMetadata) throws IOException; /** * Fetches RemoteLogSegmentId for the given topic partition which contains the given offset. * * @param topicPartition * @param offset * @return * @throws IOException */ RemoteLogSegmentId getRemoteLogSegmentId(TopicPartition topicPartition, long offset) throws IOException; /** * Fetches RemoteLogSegmentMetadata for the given RemoteLogSegmentId. * * @param metadata * @return * @throws IOException */ RemoteLogSegmentMetadata getRemoteLogSegmentMetadata(RemoteLogSegmentId metadata) throws IOException; /** * Earliest log offset if exists for the given topic partition in the remote storage. Return {@link Optional#empty()} * if there are no segments in the remote storage. * * @param tp * @return */ Optional<Long> earliestLogOffset(TopicPartition tp) throws IOException; /** * List the remote log segment files of the given topicPartition. * The RemoteLogManager of a follower uses this method to find out the remote data for the given topic partition. * * @return List of remote segments, sorted by baseOffset in ascending order. */ default List<RemoteLogSegmentInfo>List<RemoteLogSegmentMetadata> listRemoteSegments(TopicPartition topicPartition) { return listRemoteSegments(topicPartition, 0); } /** * * @param topicPartition * @param minOffset * @return */ List<RemoteLogSegmentInfo>List<RemoteLogSegmentMetadata> listRemoteSegments(TopicPartition topicPartition, long minOffset); } |
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