Walsender getting klilled, ERROR: out of memory in server logs

Hi All,

I have a table test(id int, lobcol bytea), the REPLICA IDENTITY setting of the table is set to FULL. We are using the test_decoding plugin for logical decoding. We inserted a record with lobcol size of 256 MB. While updating that record with another lobcol value of 256 MB, we found in the server logs that the corresponding walsender process keeps getting killed and it shows 'out of memory' and this particular message repeats.