divijvaidya commented on code in PR #12331:
URL: https://github.com/apache/kafka/pull/12331#discussion_r903841247
##########
clients/src/main/java/org/apache/kafka/common/record/FileRecords.java:
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@@ -461,14 +461,15 @@ private static FileChannel openChannel(File file,
int initFileSize,
boolean preallocate) throws
IOException {
if (mutable) {
- if (fileAlreadyExists || !preallocate) {
- return FileChannel.open(file.toPath(),
StandardOpenOption.CREATE, StandardOpenOption.READ,
- StandardOpenOption.WRITE);
- } else {
- RandomAccessFile randomAccessFile = new RandomAccessFile(file,
"rw");
- randomAccessFile.setLength(initFileSize);
- return randomAccessFile.getChannel();
+ if (preallocate && !fileAlreadyExists) {
+ try (RandomAccessFile randomAccessFile = new
RandomAccessFile(file, "rw")) {
Review Comment:
You don't necessarily need `RandomAccessFile.setLength()` here. Since NIO.2
in JDK 8, you can use `SeekableByteChannel` which should fix your problem with
Windows.
```
final OpenOption[] options = { StandardOpenOption.WRITE,
StandardOpenOption.CREATE_NEW , StandardOpenOption.SPARSE };
final Path hugeFile = Paths.get("hugefile.txt");
try (final SeekableByteChannel channel = Files.newByteChannel(hugeFile,
options);) {
channel.position(HUGE_FILE_SIZE);
channel.write(buf);
}
```
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