PARQUET-492: Add file of DELTA_BYTE_ARRAY encoding.

data/README.md

@@ -21,6 +21,7 @@
 
 | File  | Description |
 |---|---|
+| delta_byte_array.parquet | string columns with DELTA_BYTE_ARRAY encoding. See [delta_byte_array.md](delta_byte_array.md) for details. |
 | delta_binary_packed.parquet | INT32 and INT64 columns with DELTA_BINARY_PACKED encoding. See [delta_binary_packed.md](delta_binary_packed.md) for details. |
 | nested_structs.rust.parquet | Used to test that the Rust Arrow reader can lookup the correct field from a nested struct. See [ARROW-11452](https://issues.apache.org/jira/browse/ARROW-11452) |
 

data/delta_byte_array.md

@@ -0,0 +1,52 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+`delta_byte_array.parquet` is generated with parquet-mr version 1.10.0.
+The expected file contents are in `delta_byte_array_expect.csv`.
+
+All the column are DELTA_BYTE_ARRAY-encoded. Each column has 1000 rows.
+
+Here is the file structure:
+```file:                  file:/Users/pincheng/arrow/cpp/submodules/parquet-testing/data/delta_byte_array.parquet
+creator:               parquet-mr version 1.10.0 (build 031a6654009e3b82020012a18434c582bd74c73a)
+
+file schema:           hive_schema
+--------------------------------------------------------------------------------
+c_customer_id:         OPTIONAL BINARY L:STRING R:0 D:1
+c_salutation:          OPTIONAL BINARY L:STRING R:0 D:1
+c_first_name:          OPTIONAL BINARY L:STRING R:0 D:1
+c_last_name:           OPTIONAL BINARY L:STRING R:0 D:1
+c_preferred_cust_flag: OPTIONAL BINARY L:STRING R:0 D:1
+c_birth_country:       OPTIONAL BINARY L:STRING R:0 D:1
+c_login:               OPTIONAL BINARY L:STRING R:0 D:1
+c_email_address:       OPTIONAL BINARY L:STRING R:0 D:1
+c_last_review_date:    OPTIONAL BINARY L:STRING R:0 D:1
+
+row group 1:           RC:1000 TS:67295 OFFSET:4
+--------------------------------------------------------------------------------
+c_customer_id:          BINARY UNCOMPRESSED DO:0 FPO:4 SZ:8248/8248/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: AAAAAAAAAABAAAAA, max: AAAAAAAAPPCAAAAA, num_nulls: 0]
+c_salutation:           BINARY UNCOMPRESSED DO:0 FPO:8252 SZ:3362/3362/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: Dr., max: Sir, num_nulls: 30]
+c_first_name:           BINARY UNCOMPRESSED DO:0 FPO:11614 SZ:6595/6595/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: Aaron, max: Zachary, num_nulls: 32]
+c_last_name:            BINARY UNCOMPRESSED DO:0 FPO:18209 SZ:6955/6955/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: Adams, max: Zamora, num_nulls: 24]
+c_preferred_cust_flag:  BINARY UNCOMPRESSED DO:0 FPO:25164 SZ:1220/1220/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: N, max: Y, num_nulls: 29]
+c_birth_country:        BINARY UNCOMPRESSED DO:0 FPO:26384 SZ:9599/9599/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: AFGHANISTAN, max: ZIMBABWE, num_nulls: 31]
+c_login:                BINARY UNCOMPRESSED DO:0 FPO:35983 SZ:42/42/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[num_nulls: 1000, min/max not defined]
+c_email_address:        BINARY UNCOMPRESSED DO:0 FPO:36025 SZ:27763/27763/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: [email protected], max: [email protected], num_nulls: 31]
+c_last_review_date:     BINARY UNCOMPRESSED DO:0 FPO:63788 SZ:3511/3511/1.00 VC:1000 ENC:DELTA_BYTE_ARRAY ST:[min: 2452283, max: 2452648, num_nulls: 25]
+```