in spark-job/src/main/java/org/apache/cassandra/diff/JobMetadataDb.java [87:99]
public ProgressTracker(UUID jobId,
int bucket,
BigInteger startToken,
BigInteger endToken,
String metadataKeyspace,
Session session) {
this.jobId = jobId;
this.bucket = bucket;
this.startToken = startToken.toString();
this.endToken = endToken.toString();
this.metadataKeyspace = metadataKeyspace;
this.session = session;
}