tree b989e8678619a5b3688fbf29e83075ad0ea2c564
parent ba4cda8d14934649e7a23ef9102cd9e817d7797a
author ajantha-bhat <ajanthabhat@gmail.com> 1590807279 +0530
committer QiangCai <qiangcai@qq.com> 1590936803 +0800

[CARBONDATA-3835] Fix global sort issues

Why is this PR needed?
For global sort without partition, string comes as byte[], if we use string comparator (StringSerializableComparator) it will convert byte[] to toString which gives address and comparison goes wrong.
For global sort with partition, when sort column is partition column, it was sorting on first column instead of partition columns.

What changes were proposed in this PR?
change data type to byte before choosing a comparator.
get the sorted column based on index, don't just take from first

Does this PR introduce any user interface change?
No

Is any new testcase added?
Yes

This closes #3779