Github user jackylk commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/576#discussion_r98163965
--- Diff: core/src/main/java/org/apache/carbondata/core/keygenerator/mdkey/NumberCompressor.java ---
@@ -137,12 +161,31 @@ public NumberCompressor(int cardinality) {
return words;
}
+ // public int[] unCompress(byte[] key, int offset, int length) {
+ // int ls = length;
+ // int arrayLength = (ls * BYTE_LENGTH) / bitsLength;
+ // long[] words = new long[getWordsSizeFromBytesSize(ls)];
+ // unCompressVal(key, ls, words, offset);
+ // return getArray(words, arrayLength);
+ // }
+
public int[] unCompress(byte[] key, int offset, int length) {
- int ls = length;
- int arrayLength = (ls * BYTE_LENGTH) / bitsLength;
- long[] words = new long[getWordsSizeFromBytesSize(ls)];
- unCompressVal(key, ls, words, offset);
- return getArray(words, arrayLength);
+ int len = length / bytesPerKey;
+ if (length % bytesPerKey != 0) {
+ throw new IllegalArgumentException(
+ "Some thing wrong while decompress" + length + " " + bytesPerKey);
--- End diff --
Both length is read from footer, right? If comes here, mean the file is corrupted.
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