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Fix NullPointerException caused by null-builder 

Sometimes occurs java.lang.NullPointerException leading to app failed.
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SXY 2018-01-11 16:30:36 +08:00 committed by GitHub
parent fbbbf59c82
commit 9f8083c41c
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/api/protocolrecords/impl/pb/AllocateResponsePBImpl.java
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@ -336,6 +336,7 @@ public class AllocateResponsePBImpl extends AllocateResponse {
@Override
public synchronized void setNMTokens(List<NMToken> nmTokens) {
maybeInitBuilder();
if (nmTokens == null || nmTokens.isEmpty()) {
if (this.nmTokens != null) {
this.nmTokens.clear();