[BugFix] Fix orc tinyint on aarch64 (#49517)

Why I'm doing:
https://developer.arm.com/documentation/den0013/d/Porting/Miscellaneous-C-porting-issues/unsigned-char-and-signed-char
compiler treat char as unsigned on aarch64, negative tinyint will be wrong, and the query result from orc is null.

What I'm doing:
use int8_t not char to cast

Signed-off-by: wyb <[email protected]>
(cherry picked from commit 6de3ab7)

be/src/formats/orc/apache-orc/c++/src/ColumnReader.cc

@@ -141,7 +141,9 @@ void ColumnReader::seekToRowGroup(PositionProviderMap* positions) {
    */
 void expandBytesToLongs(int64_t* buffer, uint64_t numValues) {
     for (size_t i = numValues - 1; i < numValues; --i) {
-        buffer[i] = reinterpret_cast<char*>(buffer)[i];
+        // compiler treat char as unsigned on aarch64, negative tinyint will be wrong,
+        // so use 'int8_t' not 'char' to cast
+        buffer[i] = reinterpret_cast<int8_t*>(buffer)[i];
     }
 }
 

test/sql/test_files/R/orc_tinyint_aarch64

@@ -0,0 +1,27 @@
+-- name: orc_tinyint_aarch64
+
+create database db_${uuid0};
+use db_${uuid0};
+
+shell: ossutil64 mkdir oss://${oss_bucket}/test_files/orc_format/${uuid0} >/dev/null || echo "exit 0" >/dev/null
+
+shell: ossutil64 cp --force ./sql/test_files/orc_format/tinyint.orc oss://${oss_bucket}/test_files/orc_format/${uuid0}/ | grep -Pv "(average|elapsed)"
+-- result:
+0
+
+Succeed: Total num: 1, size: 247. OK num: 1(upload 1 files).
+-- !result
+
+select * from files('path' = 'oss://${oss_bucket}/test_files/orc_format/${uuid0}/*', 'format' = 'orc');
+-- result:
+-128
+-- !result
+
+create table t1 as select * from files('path' = 'oss://${oss_bucket}/test_files/orc_format/${uuid0}/*', 'format' = 'orc');
+
+desc t1;
+-- result:
+k1	tinyint	YES	true	None	
+-- !result
+
+shell: ossutil64 rm -rf oss://${oss_bucket}/test_files/orc_format/${uuid0}/ > /dev/null

test/sql/test_files/T/orc_tinyint_aarch64

@@ -0,0 +1,14 @@
+-- name: orc_tinyint_aarch64
+
+create database db_${uuid0};
+use db_${uuid0};
+
+shell: ossutil64 mkdir oss://${oss_bucket}/test_files/orc_format/${uuid0} >/dev/null || echo "exit 0" >/dev/null
+shell: ossutil64 cp --force ./sql/test_files/orc_format/tinyint.orc oss://${oss_bucket}/test_files/orc_format/${uuid0}/ | grep -Pv "(average|elapsed)"
+
+select * from files('path' = 'oss://${oss_bucket}/test_files/orc_format/${uuid0}/*', 'format' = 'orc');
+
+create table t1 as select * from files('path' = 'oss://${oss_bucket}/test_files/orc_format/${uuid0}/*', 'format' = 'orc');
+desc t1;
+
+shell: ossutil64 rm -rf oss://${oss_bucket}/test_files/orc_format/${uuid0}/ > /dev/null