yigress commented on code in PR #4579:
URL: https://github.com/apache/hive/pull/4579#discussion_r1297909863
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ql/src/java/org/apache/hadoop/hive/ql/exec/OrcFileMergeOperator.java:
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@@ -154,14 +161,6 @@ private void processKeyValuePairs(Object key, Object value)
return;
}
- // next file in the path
Review Comment:
yes all the orc files are compatible, this operator only needs to use one
OrcReader to read out the schema, which is used to create a new Orc writer for
the final file. afterwards it uses filesystem.read(file, offset, length) on
each orc file to read the stripe and copy into the final file.
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