Ted Yu created HDFS-7261:
----------------------------
Summary: storageMap is accessed without synchronization in
DatanodeDescriptor#updateHeartbeatState()
Key: HDFS-7261
URL: https://issues.apache.org/jira/browse/HDFS-7261
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Ted Yu
Priority: Minor
Here is the code:
{code}
failedStorageInfos = new HashSet<DatanodeStorageInfo>(
storageMap.values());
{code}
In other places, the lock on "DatanodeDescriptor.storageMap" is held:
{code}
synchronized (storageMap) {
final Collection<DatanodeStorageInfo> storages = storageMap.values();
return storages.toArray(new DatanodeStorageInfo[storages.size()]);
}
{code}
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