thecoop commented on code in PR #16619:
URL: https://github.com/apache/lucene/pull/16619#discussion_r3914199497
##########
lucene/misc/src/test/org/apache/lucene/misc/store/TestDirectIODirectory.java:
##########
@@ -218,6 +219,245 @@ public void testUseDirectIODefaults() throws Exception {
}
}
+ private static byte[] writeRandomFile(Directory dir, String name, int size)
throws IOException {
+ byte[] bytes = new byte[size];
+ random().nextBytes(bytes);
+ try (IndexOutput o = dir.createOutput(name, IOContext.DEFAULT)) {
+ o.writeBytes(bytes, 0, size);
+ }
+ return bytes;
+ }
+
+ public void testSliceDefersIOAtEveryOffset() throws Exception {
+ Path path = createTempDir("testSliceDefersIOAtEveryOffset");
+ final int blockSize =
Math.toIntExact(Files.getFileStore(path).getBlockSize());
+ final int fileSize = 4 * blockSize;
+ try (Directory dir = getDirectory(path)) {
+ byte[] bytes = writeRandomFile(dir, "out", fileSize);
+ final long[] offsets = {
+ 0, 1, 7, 96, blockSize, blockSize + 188, 2L * blockSize, 3L *
blockSize - 4
Review Comment:
Are these specific values? Could they be randomized?
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