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From StefanRRichter <...@git.apache.org>
Subject [GitHub] flink pull request #6186: [FLINK-9514,FLINK-9515,FLINK-9516] State ttl wrapp...
Date Fri, 22 Jun 2018 15:10:35 GMT
Github user StefanRRichter commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6186#discussion_r197476858
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/state/ttl/TtlStateVisibility.java
---
    @@ -0,0 +1,29 @@
    +/*
    + * 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 org.apache.flink.runtime.state.ttl;
    +
    +/**
    + * This option configures whether to return expired user value or not.
    + */
    +public enum TtlStateVisibility {
    +	/** Return still available expired user value (not yet cleaned up). */
    +	Relaxed,
    +	/** Hide expired user value and behave as if it does not exist any more. */
    +	Exact
    --- End diff --
    
    And here: expired state is never returned to the user. I think it does not matter if it
is just hidden, or deleted.


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