ahmarsuhail commented on code in PR #7763:
URL: https://github.com/apache/hadoop/pull/7763#discussion_r2177579811
##########
hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AAnalyticsAcceleratorStreamReading.java:
##########
@@ -194,4 +215,127 @@ public void testInvalidConfigurationThrows() throws
Exception {
() ->
S3SeekableInputStreamConfiguration.fromConfiguration(connectorConfiguration));
}
+ @Test
+ public void testLargeFileMultipleGets() throws Throwable {
+ describe("Large file should trigger multiple GET requests");
+
+ Path dest = writeThenReadFile("large-test-file.txt", 10 * 1024 * 1024); //
10MB
+
+
+ try (FSDataInputStream inputStream = getFileSystem().open(dest)) {
+ IOStatistics ioStats = inputStream.getIOStatistics();
+ inputStream.readFully(new byte[(int)
getFileSystem().getFileStatus(dest).getLen()]);
+
+ verifyStatisticCounterValue(ioStats, STREAM_READ_ANALYTICS_GET_REQUESTS,
2);
+ }
+ }
+
+ @Test
+ public void testSmallFileSingleGet() throws Throwable {
+ describe("Small file should trigger only one GET request");
+
+ Path dest = writeThenReadFile("small-test-file.txt", 1 * 1024 * 1024); //
1KB
Review Comment:
make the file bigger, say 6MB.
then do
in.read(2MB)
in.seek(4MB)
in.read(2MB)
you're verifying here that AAL has downloaded the whole file. so even if you
read a little bit, then seek to another position and read some more, it doesn't
trigger a new read.
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