PARQUET-1381: add parquet block merging feature
Thank you @shangxinli, in the mean time I have address your comments above.
@shangxinli, @brimzi Is this PR still active? I can pick this and take this forward if required. We are looking for the capability to merge rowgroups as well.
@MaheshGPai, this PR stalled. You can pick it up if you like, but I am not sure if this is valid anymore
The tools code has moved over the time. But the fundamental change is still valid. Thanks for that. I'll float a new PR with the change. Hope thats fine.
@shangxinli @brimzi Created https://github.com/apache/parquet-mr/pull/1121