parquet: improve BOOLEAN writing logic and report error on encoding fail

parquet/tests/boolean_writer.rs

@@ -0,0 +1,100 @@
+// 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.
+
+use parquet::column::writer::ColumnWriter;
+use parquet::file::properties::WriterProperties;
+use parquet::file::reader::FileReader;
+use parquet::file::serialized_reader::SerializedFileReader;
+use parquet::file::writer::FileWriter;
+use parquet::file::writer::SerializedFileWriter;
+use parquet::schema::parser::parse_message_type;
+use std::fs;
+use std::path::Path;
+use std::sync::{mpsc, Arc};
+use std::thread;
+use std::time::Duration;
+
+#[test]
+fn it_writes_data_without_hanging() {
+    let path = Path::new("it_writes_data_without_hanging.parquet");
+
+    let message_type = "
+  message BooleanType {
+    REQUIRED BOOLEAN DIM0;
+  }
+";
+    let schema = Arc::new(parse_message_type(message_type).expect("parse schema"));
+    let props = Arc::new(WriterProperties::builder().build());
+    let file = fs::File::create(&path).expect("create file");
+    let mut writer =
+        SerializedFileWriter::new(file, schema, props).expect("create parquet writer");
+    for _group in 0..1 {
+        let mut row_group_writer = writer.next_row_group().expect("get row group writer");
+        let values: Vec<i64> = vec![0; 2049];
+        let my_bool_values: Vec<bool> = values
+            .iter()
+            .enumerate()
+            .map(|(count, _x)| count % 2 == 0)
+            .collect();
+        while let Some(mut col_writer) =
+            row_group_writer.next_column().expect("next column")
+        {
+            match col_writer {
+                ColumnWriter::BoolColumnWriter(ref mut typed_writer) => {
+                    typed_writer
+                        .write_batch(&my_bool_values, None, None)
+                        .expect("writing bool column");
+                }
+                _ => {
+                    panic!("only test boolean values");
+                }
+            }
+            row_group_writer
+                .close_column(col_writer)
+                .expect("close column");
+        }
+        let rg_md = row_group_writer.close().expect("close row group");
+        println!("total rows written: {}", rg_md.num_rows());
+        writer
+            .close_row_group(row_group_writer)
+            .expect("close row groups");
+    }
+    writer.close().expect("close writer");
+
+    let bytes = fs::read(&path).expect("read file");
+    assert_eq!(&bytes[0..4], &[b'P', b'A', b'R', b'1']);
+
+    // Now that we have written our data and are happy with it, make
+    // sure we can read it back in < 5 seconds...
+    let (sender, receiver) = mpsc::channel();
+    let _t = thread::spawn(move || {
+        let file = fs::File::open(&Path::new("it_writes_data_without_hanging.parquet"))
+            .expect("open file");
+        let reader = SerializedFileReader::new(file).expect("get serialized reader");
+        let iter = reader.get_row_iter(None).expect("get iterator");
+        for record in iter {
+            println!("reading: {}", record);
+        }
+        println!("finished reading");
+        if let Ok(()) = sender.send(true) {}
+    });
+    assert_ne!(
+        Err(mpsc::RecvTimeoutError::Timeout),
+        receiver.recv_timeout(Duration::from_millis(5000))
+    );
+    fs::remove_file("it_writes_data_without_hanging.parquet").expect("remove file");
+}