restructured fileexporter to prepare for group_by #31068
Merged
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Description:
In fileexporter: restructured code by splitting out two functionality from
fileExporter
: marshalling and compression logic was moved tomarshaller
, and logic related to writing to file and buffering writes was moved to,fileWriter
.This pr introduces no changes to the behavior. The restructure was made in preparation for adding the new group_by functionality (see linked ticket for more detail).
Link to tracking Issue: #24654
Testing: Tests have been updated for the new structure. No tests were added or modified beyond the structural changes.
Documentation: This pr introduces no user-facing changes.