couchbase-protolib/src/main/java/com/streamsets/pipeline/stage/processor/couchbase/CouchbaseProcessor.java
private <T> Observable<T> handleError(Record record, Errors error, Throwable ex, boolean passable) {
    errors.put(record, new ErrorRecord(error, ex, passable));
    return Observable.empty();
  }
private <T> Observable<T> handleError(Record record, Errors error, Throwable ex, boolean passable) {
    errors.put(record, new ErrorRecord(error, ex, passable));
    return Observable.empty();
  }
Aggregates errors that occur during the processing of a batch.

@param record the record being written
@param error the error encountered while writing the record
@param ex the exception encountered while writing the record
@param passable whether the record can be optionally passed down the pipeline
@return an empty observable