linyiqun commented on a change in pull request #1503:
URL: https://github.com/apache/hadoop-ozone/pull/1503#discussion_r510030316
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File path:
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/KeyManagerImpl.java
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@@ -2205,6 +2272,167 @@ private void listStatusFindKeyInTableCache(
return fileStatusList;
}
+ public List<OzoneFileStatus> listStatusV1(OmKeyArgs args, boolean recursive,
+ String startKey, long numEntries, String clientAddress)
+ throws IOException {
+ Preconditions.checkNotNull(args, "Key args can not be null");
+
+ List<OzoneFileStatus> fileStatusList = new ArrayList<>();
+ if (numEntries <= 0) {
+ return fileStatusList;
+ }
+
+ String volumeName = args.getVolumeName();
+ String bucketName = args.getBucketName();
+ String keyName = args.getKeyName();
+ // A map sorted by OmKey to combine results from TableCache and DB.
+ TreeMap<String, OzoneFileStatus> cacheKeyMap = new TreeMap<>();
+ String seekKeyInDB = "";
+ long prefixKeyInDB = Long.MIN_VALUE;
+ String prefixPath = keyName;
+
+ metadataManager.getLock().acquireReadLock(BUCKET_LOCK, volumeName,
+ bucketName);
+ try {
+ if (Strings.isNullOrEmpty(startKey)) {
+ OzoneFileStatus fileStatus = getFileStatus(args, clientAddress);
+ if (fileStatus.isFile()) {
+ return Collections.singletonList(fileStatus);
+ }
+
+ // keyName is a directory
+ if (fileStatus.getKeyInfo() != null) {
+ seekKeyInDB = fileStatus.getKeyInfo().getObjectID()
+ + OZONE_URI_DELIMITER;
+ prefixKeyInDB = fileStatus.getKeyInfo().getObjectID();
+ } else {
+ String bucketKey = metadataManager.getBucketKey(volumeName,
+ bucketName);
+ OmBucketInfo omBucketInfo =
+ metadataManager.getBucketTable().get(bucketKey);
+ seekKeyInDB = omBucketInfo.getObjectID()
+ + OZONE_URI_DELIMITER;
+ prefixKeyInDB = omBucketInfo.getObjectID();
+ }
+ } else {
+ // startKey will be used in iterator seek and sets the beginning point
+ // for key traversal.
+ // key name will be used as parent ID where the user has requested to
+ // list the keys from.
+ OzoneFileStatus fileStatusInfo = getOzoneFileStatusV1(volumeName,
+ bucketName, startKey, false, null);
+ if (fileStatusInfo != null) {
+ prefixKeyInDB = fileStatusInfo.getKeyInfo().getParentObjectID();
+ seekKeyInDB = prefixKeyInDB + OZONE_URI_DELIMITER
+ + fileStatusInfo.getKeyInfo().getFileName();
+ }
+ }
+
+ // Not required to search in TableCache because all the deleted keys
+ // are marked directly in directory table or in key table by breaking
+ // the pointer to its sub-dirs. So, there is no issue of inconsistency.
+ int countEntries = 0;
Review comment:
Okay, makes sense to me.
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