Fix drop_fields when the first field is unknown #2685
Merged
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This PR is meant to fix the issue #2664 that appears in case the first field from the drop_fields is not known. The following configuration example should work now:
In this example, the Beats are printing a debugging message on the screen that
foo
andsss
fromproc.sss
were unknown, and it will remove onlyproc.cpu
from the exported event.