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HDFS-16099. Make bpServiceToActive to be volatile. (#3159)

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Co-authored-by: zhangshuyan <zqingchai@gmail.com>
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zhangshuyan0 2021-07-01 23:52:21 +08:00 committed by GitHub
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPOfferService.java
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@ -81,7 +81,7 @@ class BPOfferService {
* this can be null. If non-null, this must always refer to a member
* of the {@link #bpServices} list.
*/
private BPServiceActor bpServiceToActive = null;
private volatile BPServiceActor bpServiceToActive = null;
/**
* The list of all actors for namenodes in this nameservice, regardless