getting this error

2024-12-17T22:22:00.910855Z [error    ] The extractor generated a message exceeding the message size limit of 5.0MiB (half the buffer size of 10.0MiB).
2024-12-17T22:22:00.911147Z [error    ] To let this message be processed, increase the 'elt.buffer_size' setting to at least double the size of the largest expected message, and try again.
2024-12-17T22:22:00.911327Z [error    ] To learn more, visit <https://docs.meltano.com/reference/settings#eltbuffer_size>
2024-12-17T22:22:00.934366Z [error    ] Output line length limit exceeded
2024-12-17T22:22:00.934764Z [error    ] Block run completed.

if i set an env var

MELTANO_ELT_BUFFER_SIZE

in my cluster to 100mib, does meltano automatically grab that value?

Yes: https://docs.meltano.com/reference/settings/#eltbuffer_size

v3.6.0

bumped this to 100MiB: https://github.com/meltano/meltano/pull/8917