NCOA job fails if input is less than 100 records!

We have an NCOA job that runs fine normally. But it has started failing with following error:

(12.2) 04-12-12 15:26:25 (E) (21827:1673134752) DFC-250038: |Dataflow DF_COMMON_NCOA Sub data flow <DF_COMMON_NCOA_1_1> terminated due to error <58302>. (12.2) 04-12-12 15:26:25 (E) (21827:1218722112) FIL-080134: |Dataflow DF_COMMON_NCOA|Pipe Listener for DF_COMMON_NCOA_1_1 Named pipe error occurred: <EOF> (12.2) 04-12-12 15:26:25 (E) (21827:1252280640) FIL-080134: |Dataflow DF_COMMON_NCOA|Pipe Listener for DF_COMMON_NCOA_1_2 Named pipe error occurred: <EOF> (12.2) 04-12-12 15:26:30 (E) (21726:1293525664) DFC-250038: |Dataflow DF_COMMON_NCOA Sub data flow <DF_COMMON_NCOA_1_1> terminated due to error <58302>.

I took a large input file from a successful run and kept on reducing the number of records in the file - it turns out the 'good' file too starts failing if the number of records fall below 100.

I am not sure if 100 is some magic number, but it's really baffling the same job would start failing in such a way.

Any insight is greatly appreciated.

Designer: 12.2.3.1

JobServer: 12.2.3.1

JobEngine: 12.2.3.1

Repository 12.2.2.0000

Thanks,
Gaurav