CREATE TABLE db3.json_load_codec (
    i text PRIMARY KEY,
    j text
);

[{"i":"json","j":"NO\u001a\u001aL\\"}]

i,j
csv,"NO\u001a\u001aL\\"

./dsbulk load  -k db3 -t json_load_codec -b /Users/madhavan.sridharan/Documents/Data/07_downloads/secure-connect-db3.zip -c json -u token -p 'AstraCS:REDACTED' -url /Users/madhavan.sridharan/Downloads/codec_load.json --dsbulk.connector.json.mode SINGLE_DOCUMENT -verbosity normal --dsbulk.codec.binary HEX
Username and password provided but auth provider not specified, inferring PlainTextAuthProvider
A cloud secure connect bundle was provided: ignoring all explicit contact points.
A cloud secure connect bundle was provided and selected operation performs writes: changing default consistency level to LOCAL_QUORUM.
Operation directory: /Users/madhavan.sridharan/Documents/Data/05_tools/dsbulk/dsbulk-1.11.0/bin/logs/LOAD_20251021-003021-074839
Setting executor.maxPerSecond not set when connecting to DataStax Astra: applying a limit of 27,000 ops/second based on the number of coordinators (9).
If your Astra database has higher limits, please define executor.maxPerSecond explicitly.
total | failed | rows/s | p50ms | p99ms | p999ms | batches
    1 |      0 |      9 | 46.53 | 46.66 |  46.66 |    1.00
Operation LOAD_20251021-003021-074839 completed successfully in less than one second.
Checkpoints for the current operation were written to checkpoint.csv.
To resume the current operation, re-run it with the same settings, and add the following command line flag:
--dsbulk.log.checkpoint.file=/Users/madhavan.sridharan/Documents/Data/05_tools/dsbulk/dsbulk-1.11.0/bin/logs/LOAD_20251021-003021-074839/checkpoint.csv

% ./dsbulk load  -k db3 -t json_load_codec -b /Users/madhavan.sridharan/Documents/Data/07_downloads/secure-connect-db3.zip -c csv -u token -p 'AstraCS:REDACTED' -url /Users/madhavan.sridharan/Downloads/codec_load.csv -verbosity normal
Username and password provided but auth provider not specified, inferring PlainTextAuthProvider
A cloud secure connect bundle was provided: ignoring all explicit contact points.
A cloud secure connect bundle was provided and selected operation performs writes: changing default consistency level to LOCAL_QUORUM.
Operation directory: /Users/madhavan.sridharan/Documents/Data/05_tools/dsbulk/dsbulk-1.11.0/bin/logs/LOAD_20251021-003008-168371
Setting executor.maxPerSecond not set when connecting to DataStax Astra: applying a limit of 27,000 ops/second based on the number of coordinators (9).
If your Astra database has higher limits, please define executor.maxPerSecond explicitly.
total | failed | rows/s | p50ms | p99ms | p999ms | batches
    1 |      0 |     10 | 26.15 | 26.21 |  26.21 |    1.00
Operation LOAD_20251021-003008-168371 completed successfully in less than one second.
Checkpoints for the current operation were written to checkpoint.csv.
To resume the current operation, re-run it with the same settings, and add the following command line flag:
--dsbulk.log.checkpoint.file=/Users/madhavan.sridharan/Documents/Data/05_tools/dsbulk/dsbulk-1.11.0/bin/logs/LOAD_20251021-003008-168371/checkpoint.csv

token@cqlsh:db3> select * from json_load_codec ;

 i    | j
------+------------------
  csv | NO\u001a\u001aL\
 json |     NO\x1a\x1aL\

(2 rows)