dave-csc opened a new issue, #5580:
URL: https://github.com/apache/hop/issues/5580
### Apache Hop version?
2.14
### Java version?
17.0.2
### Operating system
Linux
### What happened?
Enabling the option JSON size field causes an Exception:
```
2025/07/25 10:27:19 - Enhanced JSON Output.0 - ERROR: Unexpected error
2025/07/25 10:27:19 - Enhanced JSON Output.0 - ERROR:
java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1
2025/07/25 10:27:19 - Enhanced JSON Output.0 - at
org.apache.hop.pipeline.transforms.jsonoutputenhanced.JsonOutput.outputRow(JsonOutput.java:389)
2025/07/25 10:27:19 - Enhanced JSON Output.0 - at
org.apache.hop.pipeline.transforms.jsonoutputenhanced.JsonOutput.manageRowItems(JsonOutput.java:152)
2025/07/25 10:27:19 - Enhanced JSON Output.0 - at
org.apache.hop.pipeline.transforms.jsonoutputenhanced.JsonOutput.processRow(JsonOutput.java:122)
2025/07/25 10:27:19 - Enhanced JSON Output.0 - at
org.apache.hop.pipeline.transform.RunThread.run(RunThread.java:54)
2025/07/25 10:27:19 - Enhanced JSON Output.0 - at
java.base/java.lang.Thread.run(Thread.java:833)
2025/07/25 10:27:19 - Enhanced JSON Output.0 - Finished processing (I=0,
O=0, R=3, W=0, U=0, E=1)
```
The error is most likely caused in this segment of code, where there is an
attempt to fill a second element in an array that actually has one:
```
Object[] additionalRowFields = new Object[1];
additionalRowFields[0] = data.jsonSerialized;
int nextFieldPos = 1;
// Fill accessory fields
if (meta.getJsonSizeFieldname() != null &&
meta.getJsonSizeFieldname().length() > 0) {
additionalRowFields[nextFieldPos] = Long.valueOf(data.jsonLength);
nextFieldPos++;
}
```
### Issue Priority
Priority: 2
### Issue Component
Component: Transforms
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