[jira] [Updated] (AVRO-1882) ConcurrentHashMap with non-string keys fails in Java 1.8

["Sachin Goyal (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AVRO-1882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sachin Goyal updated AVRO-1882:
-------------------------------
    Attachment: TestNonStringConcurrentMap.java

Exception for the above test is:
{noformat}
org.apache.avro.file.DataFileWriter$AppendWriteException: java.lang.NullPointerException: in org.apache.avro.reflect.MapsPojo in union in array in org.apache.avro.reflect.PairIntegerString null of org.apache.avro.reflect.PairIntegerString of array of union in field map2 of org.apache.avro.reflect.MapsPojo
	at org.apache.avro.reflect.ReflectData.getField(ReflectData.java:158)
	at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:164)
	at org.apache.avro.specific.SpecificDatumWriter.writeField(SpecificDatumWriter.java:90)
	at org.apache.avro.reflect.ReflectDatumWriter.writeField(ReflectDatumWriter.java:182)
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:156)
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:118)
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:75)
	at org.apache.avro.reflect.ReflectDatumWriter.write(ReflectDatumWriter.java:150)
	at org.apache.avro.generic.GenericDatumWriter.writeArray(GenericDatumWriter.java:192)
	at org.apache.avro.reflect.ReflectDatumWriter.writeArray(ReflectDatumWriter.java:65)
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:120)
{noformat}

> ConcurrentHashMap with non-string keys fails in Java 1.8
> --------------------------------------------------------
>
>                 Key: AVRO-1882
>                 URL: https://issues.apache.org/jira/browse/AVRO-1882
>             Project: Avro
>          Issue Type: Bug
>    Affects Versions: 1.8.1
>            Reporter: Sachin Goyal
>         Attachments: TestNonStringConcurrentMap.java
>
>
> Support for ConcurrentHashMaps with non-string keys seems to be broken when 1.8 version of Java is used because the newer ConcurrentHashMap uses the names "key" and "val" instead of "key" and "values" for its Map.Entry class.
> [HashEntry in 1.7|http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/util/concurrent/ConcurrentHashMap.java#218]
> [MapEntry in 1.8|http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/8u40-b25/java/util/concurrent/ConcurrentHashMap.java?av=h#3468]
> Hence avro-code that assumes the presence of key/value breaks.
> ([ReflectData.java:L434-L443|https://github.com/apache/avro/blob/master/lang/java/avro/src/main/java/org/apache/avro/reflect/ReflectData.java#L434-L443])
> Run the attached test to see the same.



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