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HDFS-16704. Datanode return empty response instead of NPE for GetVolumeInfo during restarting (#4661). Contributed by ZanderXu.

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Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>
Signed-off-by: He Xiaoqiao <hexiaoqiao@apache.org>
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xuzq 2022-08-15 20:57:27 +08:00 committed by GitHub
parent 86cc96c493
commit b1d4af2492
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1 changed files with 4 additions and 1 deletions
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -3628,7 +3628,10 @@ public String getBPServiceActorInfo() {
*/
@Override // DataNodeMXBean
public String getVolumeInfo() {
Preconditions.checkNotNull(data, "Storage not yet initialized");
if (data == null) {
LOG.debug("Storage not yet initialized.");
return "";
}
return JSON.toString(data.getVolumeInfoMap());
}