fix bug when append data by absolute path

mindspore/ccsrc/mindrecord/io/shard_writer.cc

@@ -201,7 +201,7 @@ MSRStatus ShardWriter::OpenForAppend(const std::string &path) {
   if (ret == FAILED) {
     return FAILED;
   }
-  ret = Open(json_header["shard_addresses"], true);
+  ret = Open(real_addresses, true);
   if (ret == FAILED) {
     MS_LOG(ERROR) << "Open file failed";
     return FAILED;

tests/ut/python/mindrecord/test_mindrecord_base.py

@@ -25,6 +25,7 @@ FILES_NUM = 4
 CV_FILE_NAME = "./imagenet.mindrecord"
 CV2_FILE_NAME = "./imagenet_loop.mindrecord"
 CV3_FILE_NAME = "./imagenet_append.mindrecord"
+CV4_FILE_NAME = "/tmp/imagenet_append.mindrecord"
 NLP_FILE_NAME = "./aclImdb.mindrecord"
 
 
@@ -170,6 +171,35 @@ def test_cv_file_append_writer():
         os.remove("{}.db".format(x))
 
 
+def test_cv_file_append_writer_absolute_path():
+    """tutorial for cv dataset append writer."""
+    writer = FileWriter(CV4_FILE_NAME, 4)
+    data = get_data("../data/mindrecord/testImageNetData/")
+    cv_schema_json = {"file_name": {"type": "string"},
+                      "label": {"type": "int64"}, "data": {"type": "bytes"}}
+    writer.add_schema(cv_schema_json, "img_schema")
+    writer.add_index(["file_name", "label"])
+    writer.write_raw_data(data[0:5])
+    writer.commit()
+    write_append = FileWriter.open_for_append(CV4_FILE_NAME + "0")
+    write_append.write_raw_data(data[5:10])
+    write_append.commit()
+    reader = FileReader(CV4_FILE_NAME + "0")
+    count = 0
+    for index, x in enumerate(reader.get_next()):
+        assert len(x) == 3
+        count = count + 1
+        logger.info("#item{}: {}".format(index, x))
+    assert count == 10
+    reader.close()
+
+    paths = ["{}{}".format(CV4_FILE_NAME, str(x).rjust(1, '0'))
+             for x in range(4)]
+    for x in paths:
+        os.remove("{}".format(x))
+        os.remove("{}.db".format(x))
+
+
 def test_cv_file_writer_loop_and_read():
     """tutorial for cv dataset loop writer."""
     writer = FileWriter(CV2_FILE_NAME, FILES_NUM)