THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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/** * Flush any cached data * * @deprecated since KIP-NEXT892. Use {@link #commit(Map)} instead. */ @Deprecated default void flush() {} /** * Commit the current transaction to this StateStore with the given changelog offset. * <p> * This is a convenience method for {@link #commit(Map) commit(Collections.singletonMap(null, changelogOffset))}. * <p> * This method is used to commit records to a regular, logged StateStore. * * @see #commit(Map) * @param changelogOffset The offset of the changelog topic this commit corresponds to. The offset can be * {@code null} if this StateStore does not have a changelog. */ @Evolving default void commit(final Long changelogOffset) { commit(Collections.singletonMap(null, changelogOffset)); } /** * Commit the current transaction to this StateStore with the given offsets. * <p> * All records that were written to this store since the last {@code commit} will be written to the store * atomically, i.e. either all will be written, or none of them will. * <p> * After this method returns, calls to {@link #getCommittedOffset(TopicPartition)} will return the associated value * of {@code offsets}. * <p> * {@code offsets} will contain one of either: * <ul> * <li>A {@code Map} of offsets for each input partition of this Global StateStore.</li> * <li>A {@code Map} containing one mapping from {@code null} to the offset of the changelog partition for this * logged StateStore.</li> * <li>A {@code null}, if this StateStore is not {@link StoreBuilder#withLoggingDisabled() logged}.</li> * </ul> * <p> * If this store is {@link #persistent() persistent}, it is required that on-restart, the offsets returned by {@link * #getCommittedOffset(TopicPartition)} correspond with the records persisted in the StateStore. * * @param offsets The offset(s) for the input topics this commit corresponds to. May be {@code null} if this * StateStore has no input topics or changelog. */ @Evolving default void commit(final Map<TopicPartition, Long> offsets) { flush(); } /** * Returns the latest committed changelog offset that the materialized state in this store represents. * <p> * The state in the store is guaranteed to reflect exactly the state in the changelog up to this offset. * <p> * This may be {@code null}, if the store does not contain any metadata on its changelog offset. In this case, the * StateStore itself makes no guarantees about its contents. * <p> * Equivalent to calling {@code getCommittedOffset(null)}. * <p> * This method should <em>not</em> be called for global StateStores, as they are not backed by a changelog. * * @return The latest committed changelog offset that the state in this store represents, or {@code null}, if no * changelog offset metadata is available and no guarantees can be made. */ @Evolving default Long getCommittedOffset() { return getCommittedOffset(null); } /** * Returns the latest committed changelog offset that the materialized state in this store represents. * <p> * The state in the store is guaranteed to reflect exactly the state in the changelog up to this offset. * <p> * This may be {@code null}, if the store does not contain any metadata on its changelog offset. In this case, the * StateStore itself makes no guarantees about its contents. * <p> * If {@code topicPartition} is {@code null}, the returned offset will be the offset for the changelog partition of * this StateStore, if one exists. * * @return The latest committed offset that the state in this store represents, or {@code null}, if no * changelog offset metadata is available and no guarantees can be made. */ @Evolving default Long getCommittedOffset(final TopicPartition topicPartition) { return null; } |
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