zhangbutao commented on code in PR #27784:
URL: https://github.com/apache/doris/pull/27784#discussion_r1448291231
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be/src/util/hash_util.hpp:
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@@ -133,13 +133,21 @@ class HashUtil {
// refer to
https://github.com/apache/commons-codec/blob/master/src/main/java/org/apache/commons/codec/digest/MurmurHash3.java
static const uint32_t MURMUR3_32_SEED = 104729;
+ // refer
https://github.com/apache/spark/blob/v3.5.0/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/hash.scala#L615
+ static const uint32_t SPARK_MURMUR_32_SEED = 42;
Review Comment:
Do you consider the compatibility with hive hash?
Ref https://issues.apache.org/jira/browse/SPARK-17495, IMO, Hive3 use a
different hash implementation from Spark's Murmur3Hash. If the bucketed table
is created by HiveServer2, can we get the correct results with this PR?
Thanks.
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