You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@avro.apache.org by cl...@apache.org on 2023/08/16 09:35:09 UTC
[avro] branch master updated: AVRO-3748 [java] fix SeekableInputStream.skip (#2203)
This is an automated email from the ASF dual-hosted git repository.
clesaec pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/avro.git
The following commit(s) were added to refs/heads/master by this push:
new 33631e1e0 AVRO-3748 [java] fix SeekableInputStream.skip (#2203)
33631e1e0 is described below
commit 33631e1e0fa48af0cd4ff46a32cbdb809e326177
Author: Steven Aerts <st...@gmail.com>
AuthorDate: Wed Aug 16 11:35:02 2023 +0200
AVRO-3748 [java] fix SeekableInputStream.skip (#2203)
The implementation of SeekableInputStream.skip had a longstantind issue
that it did a seek to a wrong position.
This issue is rather difficult to hit in avro as it is only used in
corner cases of for example the FastReader.
---
.../java/org/apache/avro/file/DataFileReader.java | 7 ++--
.../apache/avro/file/TestSeekableInputStream.java | 45 ++++++++++++++++++++++
2 files changed, 48 insertions(+), 4 deletions(-)
diff --git a/lang/java/avro/src/main/java/org/apache/avro/file/DataFileReader.java b/lang/java/avro/src/main/java/org/apache/avro/file/DataFileReader.java
index 10067cd6c..7bf2c05b1 100644
--- a/lang/java/avro/src/main/java/org/apache/avro/file/DataFileReader.java
+++ b/lang/java/avro/src/main/java/org/apache/avro/file/DataFileReader.java
@@ -312,12 +312,11 @@ public class DataFileReader<D> extends DataFileStream<D> implements FileReader<D
long length = in.length();
long remaining = length - position;
if (remaining > skip) {
- in.seek(skip);
- return in.tell() - position;
+ in.seek(position + skip);
} else {
- in.seek(remaining);
- return in.tell() - position;
+ in.seek(length);
}
+ return in.tell() - position;
}
@Override
diff --git a/lang/java/avro/src/test/java/org/apache/avro/file/TestSeekableInputStream.java b/lang/java/avro/src/test/java/org/apache/avro/file/TestSeekableInputStream.java
new file mode 100644
index 000000000..97715c044
--- /dev/null
+++ b/lang/java/avro/src/test/java/org/apache/avro/file/TestSeekableInputStream.java
@@ -0,0 +1,45 @@
+/*
+ * 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
+ *
+ * https://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.
+ */
+package org.apache.avro.file;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.file.Path;
+
+public class TestSeekableInputStream {
+ @Test
+ public void testSkip(@TempDir Path tempDir) throws IOException {
+ File f = tempDir.resolve("testSkip.avro").toFile();
+ try (FileWriter w = new FileWriter(f)) {
+ w.write("someContent");
+ }
+ try(SeekableFileInput in = new SeekableFileInput(f);
+ DataFileReader.SeekableInputStream stream = new DataFileReader.SeekableInputStream(in)
+ ) {
+ for (long i = 0; i < stream.length(); i++) {
+ Assertions.assertEquals(stream.length() - i, stream.available());
+ Assertions.assertEquals(1, stream.skip(1));
+ }
+ }
+ }
+}