szetszwo commented on a change in pull request #2355:
URL: https://github.com/apache/hadoop/pull/2355#discussion_r498605120
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java
##########
@@ -1459,6 +1460,19 @@ SnapshotDiffReport decodeResponse(Map<?, ?> json) {
}.run();
}
+ public SnapshotStatus[] getSnapshotList(final Path snapshotDir)
Review comment:
In DistributedFileSystem, it is called
` public SnapshotStatus[] getSnapshotListing(Path snapshotRoot)`
Let's use the same name?
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/SnapshotStatus.java
##########
@@ -25,6 +25,7 @@
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.permission.FsPermission;
import org.apache.hadoop.hdfs.DFSUtilClient;
+import org.apache.hadoop.util.StringUtils;
Review comment:
Unused import.
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/client/HttpFSFileSystem.java
##########
@@ -1582,6 +1584,18 @@ public SnapshotDiffReport getSnapshotDiffReport(Path
path,
return JsonUtilClient.toSnapshottableDirectoryList(json);
}
+ public SnapshotStatus[] getSnapshotList(Path snapshotRoot)
Review comment:
It should call getSnapshotListing.
##########
File path:
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/JsonUtilClient.java
##########
@@ -872,4 +873,39 @@ private static SnapshottableDirectoryStatus
toSnapshottableDirectoryStatus(
snapshotQuota, parentFullPath);
return snapshottableDirectoryStatus;
}
+
+ public static SnapshotStatus[] toSnapshotList(final Map<?, ?> json) {
+ if (json == null) {
+ return null;
+ }
+ List<?> list = (List<?>) json.get("SnapshotList");
+ if (list == null) {
+ return null;
+ }
+ SnapshotStatus[] statuses =
+ new SnapshotStatus[list.size()];
+ for (int i = 0; i < list.size(); i++) {
+ statuses[i] = toSnapshotStatus((Map<?, ?>) list.get(i));
+ }
+ return statuses;
+ }
+
+ private static SnapshotStatus toSnapshotStatus(
+ Map<?, ?> json) {
+ if (json == null) {
+ return null;
+ }
+ int snapshotID = getInt(json, "snapshotID", 0);
+ boolean isDeleted = ((String)json.get("deletionStatus")).
+ contentEquals("DELETED");
Review comment:
Use "DELETED".equal(..) in order to avoid NPE?
` final boolean isDeleted = "DELETED".equals(json.get("deletionStatus"));`
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