hindex: fix show index size number wrongness

Author: peiwangdb

hetu-filesystem-client/src/main/java/io/hetu/core/filesystem/HetuHdfsFileSystemClient.java

@@ -199,7 +199,7 @@ public Object getAttribute(Path path, String attribute)
             case SupportedFileAttributes.LAST_MODIFIED_TIME:
                 return fileStatus.getModificationTime();
             case SupportedFileAttributes.SIZE:
-                return fileStatus.getBlockSize();
+                return fileStatus.getLen();
             default:
                 return null;
         }

hetu-heuristic-index/src/main/java/io/hetu/core/heuristicindex/PartitionIndexWriter.java

@@ -208,14 +208,13 @@ public long persist()
             fs.createDirectories(filePath.getParent());
             try (OutputStream os = fs.newOutputStream(filePath)) {
                 partitionIndex.serialize(os);
-
-                return (long) fs.getAttribute(filePath, "size");
             }
             catch (IOException e) {
                 // roll back creation
                 fs.delete(filePath);
                 throw e;
             }
+            return (long) fs.getAttribute(filePath, "size");
         }
         finally {
             if (partitionIndex != null) {