Size of TMP4 file before the Timestamp extract: 0 /tmp/tmp.MbEdw3RbPo
First 10 records of TMP4
Size of TMP1 file: 0 /tmp/tmp.IWivwbguCk

Processing complete:
✓ Valid JSON rows: 0 (saved to /tmp/tmp.K9wwGkRJH9)
✗ Invalid rows: 0 (saved to invalid_rows.txt)
Empty so no processing required