Prasanth J created HIVE-6382:
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Summary: PATCHED_BLOB encoding in ORC will corrupt the data in
some cases
Key: HIVE-6382
URL: https://issues.apache.org/jira/browse/HIVE-6382
Project: Hive
Issue Type: Bug
Components: Serializers/Deserializers
Affects Versions: 0.13.0
Reporter: Prasanth J
Assignee: Prasanth J
In PATCHED_BLOB encoding, gapVsPatchList is an array of long that stores gap
between the values that are patched (g) and the patch value (p). The maximum
distance of gap can be 511 that require 8 bits to encode. And patch values can
take more than 56 bits. When patch values take more than 56 bits, p + g will
become > 64 bits which cannot be packed to a long. This will result in data
corruption under the case where patch values are > 56 bits.
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