tree 146080794415b9800a65a29eed9cc5192af30dc2
parent 917e041439282985ec28ff89249db6088e6771df
author Indhumathi27 <indhumathim27@gmail.com> 1564140092 +0530
committer kumarvishal09 <kumarvishal1802@gmail.com> 1564730985 +0530

[CARBONDATA-3478]Fix ArrayIndexOutOfBound Exception on compaction after alter operation

Problem:
In case of alter add, drop, rename operation, restructuredBlockExists will be true.
Currently, to get RawResultIterator for a block, we check if block has ColumnDrift
or not, by comparing SegmentProperties and columndrift columns.
SegmentProperties will be formed based on restructuredBlockExists.
if restructuredBlockExists is true, we will take current column schema to form SegmentProperties,
else, we will use datafilefooter columnschema to form SegmentProperties.

In the example given in CARBONDATA-3478 for both blocks, we use current column
schema to form SegmentProperties, as restructuredBlockExists will be true.
Hence, while iterating block 1, it throws ArrayIndexOutOfBound exception,
as it uses RawResultIterator instead of ColumnDriftRawResultIterator

Solution:
Use schema from datafilefooter of each block to check if it has columndrift or not

This closes #3337