steveloughran commented on a change in pull request #2297:
URL: https://github.com/apache/hadoop/pull/2297#discussion_r499736294
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File path:
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/compress/CompressDecompressTester.java
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@@ -432,7 +412,11 @@ public void assertCompression(String name, Compressor
compressor,
joiner.join(name, "byte arrays not equals error !!!"),
originalRawData, decompressOut.toByteArray());
} catch (Exception ex) {
- fail(joiner.join(name, ex.getMessage()));
+ if (ex.getMessage() != null) {
+ fail(joiner.join(name, ex.getMessage()));
+ } else {
+ fail(joiner.join(name, ExceptionUtils.getStackTrace(ex)));
Review comment:
NPE is why toString() is what new code should do.
Why don't we just `throw new AssertionError(name +ex, ex)`. That way, the
stack trace doesn't get lost, which is something we never want to have happen,
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