[GitHub] incubator-apex-malhar pull request: APEXMALHAR-1897 added managed ...

[amberarrow <gi...@git.apache.org>]

Github user amberarrow commented on a diff in the pull request:

    https://github.com/apache/incubator-apex-malhar/pull/145#discussion_r56718885
  
    --- Diff: library/src/main/java/com/datatorrent/lib/state/BucketedState.java ---
    @@ -0,0 +1,60 @@
    +/**
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *   http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing,
    + * software distributed under the License is distributed on an
    + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    + * KIND, either express or implied.  See the License for the
    + * specific language governing permissions and limitations
    + * under the License.
    + */
    +
    +package com.datatorrent.lib.state;
    +
    +import java.util.concurrent.Future;
    +
    +import com.datatorrent.netlet.util.Slice;
    +
    +/**
    + * A state where keys are grouped in buckets.
    + */
    +public interface BucketedState
    +{
    +  /**
    +   * Sets the value of the key in bucket identified by bucketId.
    +   *
    +   * @param bucketId identifier of the bucket.
    +   * @param key     key
    +   * @param value   value
    +   */
    +  void put(long bucketId, Slice key, Slice value);
    +
    +  /**
    +   * Returns the value of the key in a bucket identified by bucketId. Fetching a key can be expensive if the key
    +   * is not in memory and is present on disk. This fetches the key synchronously. <br/>
    +   * {@link #getAsync(long, Slice)} is recommended for efficiently reading the value of a key.
    +   *
    +   * @param bucketId identifier of the bucket.
    +   * @param key     key
    +   * @return        value
    +   */
    +  Slice getSync(long bucketId, Slice key);
    +
    +  /**
    +   * Returns the future using which the value is obtained.<br/>
    +   * If the key is present in memory, then the future has its value set when constructed.
    --- End diff --
    
    Suggest omitting "in memory" or replacing with "in the bucket" (multiple places)


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.
---