{"push_id":1338045288,"size":1,"distinct_size":1,"ref":"refs/heads/branch-2.0","head":"6d056c168c45d2decf5ffbb96d59623d52ed8490","before":"a84d8ef375f853c5841d458a593e41b457b9e6ff","commits":[{"sha":"6d056c168c45d2decf5ffbb96d59623d52ed8490","author":{"name":"Davies Liu","email":"589979bd19a058b75730100a5a88539708000f52@databricks.com"},"message":"[SPARK-17806] [SQL] fix bug in join key rewritten in HashJoin\n\n## What changes were proposed in this pull request?\n\nIn HashJoin, we try to rewrite the join key as Long to improve the performance of finding a match. The rewriting part is not well tested, has a bug that could cause wrong result when there are at least three integral columns in the joining key also the total length of the key exceed 8 bytes.\n\n## How was this patch tested?\n\nAdded unit test to covering the rewriting with different number of columns and different data types. Manually test the reported case and confirmed that this PR fix the bug.\n\nAuthor: Davies Liu <davies@databricks.com>\n\nCloses #15390 from davies/rewrite_key.\n\n(cherry picked from commit 94b24b84a666517e31e9c9d693f92d9bbfd7f9ad)\nSigned-off-by: Davies Liu <davies.liu@gmail.com>","distinct":true,"url":"https://api.github.com/repos/apache/spark/commits/6d056c168c45d2decf5ffbb96d59623d52ed8490"}]}
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