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https://issues.apache.org/jira/browse/SAMZA-1423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prateek Maheshwari resolved SAMZA-1423.
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Resolution: Fixed
> Implement a RocksDb backed time-series store for storing and retrieving
> messages time-ranges
> --------------------------------------------------------------------------------------------
>
> Key: SAMZA-1423
> URL: https://issues.apache.org/jira/browse/SAMZA-1423
> Project: Samza
> Issue Type: Sub-task
> Reporter: Jagadish
> Assignee: Jagadish
>
> I'm thinking of the following API for the time-series store:
> {code}
> /**
> * A key-value store that allows entries to be queried and stored based on
> time ranges.
> *
> * Implementations of this interface are expected to be thread-safe.
> *
> * @param <K>, the type of key in the store
> * @param <V>, the type of value in the store
> */
> public interface TimeSeriesStore<K, V> {
> ClosableIterator<KV<V, Long>> get(K key, Long startTimestamp, Long
> endTimeStamp);
> void put(K key, V val, Long timeStamp);
> void remove(K key, Long startTimestamp, Long endTimeStamp);
> }
> {code}
> {code}
> /**
> * An iterator that can be closed.
> *
> * <p> Implement close to free resources assigned to the iterator such as
> open file handles, persistent state etc.
> *
> * @param <V>
> */
> public interface ClosableIterator<V> extends Iterator<V> {
> /**
> * Closes this iterator and frees resources assigned to it.
> *
> * It is illegal to invoke {@link #next()} and {@link #hasNext()} after an
> iterator has been closed.
> */
> public void close();
> }
> {code}
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