smengcl commented on a change in pull request #2370:
URL: https://github.com/apache/hadoop/pull/2370#discussion_r501900056
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File path:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@@ -8524,6 +8530,39 @@ void checkAccess(String src, FsAction mode) throws
IOException {
logAuditEvent(true, operationName, src);
}
+ /**
+ * Check if snapshot roots are created for all existing snapshottable
+ * directories. Create them if not.
+ */
+ void checkAndProvisionSnapshotTrashRoots() throws IOException {
+ if (haEnabled) {
+ if (!inActiveState()) {
Review comment:
I am not 100% sure about this condition check. Any
suggestions/confirmations?
The goal is to only let **Active NN** to check and provision snapshot trash
roots. The assumption is that the `mkdirs()` call below propagates the write to
standby NameNode.
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