Ngone51 commented on a change in pull request #33451:
URL: https://github.com/apache/spark/pull/33451#discussion_r677451547
##########
File path:
common/network-shuffle/src/test/java/org/apache/spark/network/shuffle/ExternalBlockHandlerSuite.java
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@@ -108,6 +116,107 @@ public void testCompatibilityWithOldVersion() {
verifyOpenBlockLatencyMetrics(2, 2);
}
+ private void checkDiagnosisResult(
+ String algorithm,
+ Cause expectedCaused) throws IOException {
+ String appId = "app0";
+ String execId = "execId";
+ int shuffleId = 0;
+ long mapId = 0;
+ int reduceId = 0;
+
+ // prepare the checksum file
+ File tmpDir = Files.createTempDir();
+ File checksumFile = new File(tmpDir,
+ "shuffle_" + shuffleId + "_" + mapId + "_" + reduceId + ".checksum." +
algorithm);
+ DataOutputStream out = new DataOutputStream(new
FileOutputStream(checksumFile));
+ long checksumByReader = 0L;
+ if (expectedCaused != Cause.UNSUPPORTED_CHECKSUM_ALGORITHM) {
+ Checksum checksum =
ShuffleChecksumHelper.getChecksumByAlgorithm(algorithm);
+ CheckedInputStream checkedIn = new CheckedInputStream(
+ blockMarkers[0].createInputStream(), checksum);
+ byte[] buffer = new byte[10];
+ ByteStreams.readFully(checkedIn, buffer, 0, (int)
blockMarkers[0].size());
+ long checksumByWriter = checkedIn.getChecksum().getValue();
+
+ switch (expectedCaused) {
+ case DISK_ISSUE:
+ out.writeLong(-checksumByWriter);
+ checksumByReader = checksumByWriter;
+ break;
Review comment:
Sorry. I don't get this. Do you mean we try write the `MIN_VALUE`
instead of `-checksumByWriter`?
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