[AVRO-2376] Null Pointer Exception

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.8.2
• Component/s: java
• Assignee: Unassigned
• Reporter: Muhammad Asif Tasleem
• Created: 17/Apr/19 00:27
• Updated: 17/Apr/19 00:27

Description

GenericDatumWriter throws an NPE at line# 67 if datum is null:

 

 

  @Override

  protected void writeString(Schema schema, Object datum, Encoder out)

    throws IOException {

    if (!(datum instanceof CharSequence)

        && getSpecificData().isStringable(datum.getClass())) {

      datum = datum.toString();                   // convert to string

    }

    writeString(datum, out);

  }

 

 

The condition that is being verified in GenericDatumWriter at line # 69 should be broken to handle the case when datum is null:

/** Called to write data.*/

  protected void write(Schema schema, Object datum, Encoder out)

      throws IOException {

    LogicalType logicalType = schema.getLogicalType();

    if (datum != null && logicalType != null) {

      Conversion<?> conversion = getData()

          .getConversionByClass(datum.getClass(), logicalType);

      writeWithoutConversion(schema,

          convert(schema, logicalType, conversion, datum), out);

    } else

{       writeWithoutConversion(schema, datum, out);     }

  }