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Posted to dev@gora.apache.org by Lewis John Mcgibbney <le...@gmail.com> on 2011/12/13 22:14:19 UTC
null.pointer.Exception in o.a.g.util.IOUtils
Hi,
Having a look at failing tests in gora-core module here. In particular
the following stack trace [1] which occurs for 5 tests in all. I
thought I had begun to solve it earlier but unfortunately I was wrong.
I think it is the code below, taken from IOUtils which is which is
invoking the exception. I've added the important line numbers. For
clarity the stack trace notes that the NPE is caught at line 116.
107 /** Serializes the object to the given dataoutput using
* available Hadoop serializations
* @throws IOException */
public static<T> void serialize(Configuration conf, DataOutput out
, T obj, Class<T> objClass) throws IOException {
if(serializationFactory == null) {
serializationFactory = new SerializationFactory(getOrCreateConf(conf));
}
116 Serializer<T> serializer = serializationFactory.getSerializer(objClass);
ByteBufferOutputStream os = new ByteBufferOutputStream();
try {
serializer.open(os);
121 serializer.serialize(obj);
[1] https://builds.apache.org/job/gora-trunk/org.apache.gora$gora-core/67/testReport/org.apache.gora.mapreduce/TestPersistentSerialization/testSerdeEmployee/
--
Lewis
Re: null.pointer.Exception in o.a.g.util.IOUtils
Posted by Ioannis Canellos <io...@gmail.com>.
Ok, it does work. The trick is to configure the maven-surefire-plugin to run using forkMode always. I committed it.
On 14 Δεκ 2011, at 6:48 μ.μ., Ioannis Canellos wrote:
> Hi,
>
> I think that most of the failures around this one, do not occur when we run a single test.
> This makes me think that one tests break the others. I have been trying to make the tests run isolated and I think I have made some progress here. I will probably commit this later today once I make sure it works fine.
>
> --
> Ioannis Canellos
>
> On 13 Δεκ 2011, at 11:14 μ.μ., Lewis John Mcgibbney wrote:
>
>> Hi,
>>
>> Having a look at failing tests in gora-core module here. In particular
>> the following stack trace [1] which occurs for 5 tests in all. I
>> thought I had begun to solve it earlier but unfortunately I was wrong.
>>
>> I think it is the code below, taken from IOUtils which is which is
>> invoking the exception. I've added the important line numbers. For
>> clarity the stack trace notes that the NPE is caught at line 116.
>>
>> 107 /** Serializes the object to the given dataoutput using
>> * available Hadoop serializations
>> * @throws IOException */
>> public static<T> void serialize(Configuration conf, DataOutput out
>> , T obj, Class<T> objClass) throws IOException {
>>
>> if(serializationFactory == null) {
>> serializationFactory = new SerializationFactory(getOrCreateConf(conf));
>> }
>> 116 Serializer<T> serializer = serializationFactory.getSerializer(objClass);
>>
>> ByteBufferOutputStream os = new ByteBufferOutputStream();
>> try {
>> serializer.open(os);
>> 121 serializer.serialize(obj);
>>
>>
>>
>> [1] https://builds.apache.org/job/gora-trunk/org.apache.gora$gora-core/67/testReport/org.apache.gora.mapreduce/TestPersistentSerialization/testSerdeEmployee/
>>
>>
>>
>> --
>> Lewis
>
Re: null.pointer.Exception in o.a.g.util.IOUtils
Posted by Ioannis Canellos <io...@gmail.com>.
Hi,
I think that most of the failures around this one, do not occur when we run a single test.
This makes me think that one tests break the others. I have been trying to make the tests run isolated and I think I have made some progress here. I will probably commit this later today once I make sure it works fine.
--
Ioannis Canellos
On 13 Δεκ 2011, at 11:14 μ.μ., Lewis John Mcgibbney wrote:
> Hi,
>
> Having a look at failing tests in gora-core module here. In particular
> the following stack trace [1] which occurs for 5 tests in all. I
> thought I had begun to solve it earlier but unfortunately I was wrong.
>
> I think it is the code below, taken from IOUtils which is which is
> invoking the exception. I've added the important line numbers. For
> clarity the stack trace notes that the NPE is caught at line 116.
>
> 107 /** Serializes the object to the given dataoutput using
> * available Hadoop serializations
> * @throws IOException */
> public static<T> void serialize(Configuration conf, DataOutput out
> , T obj, Class<T> objClass) throws IOException {
>
> if(serializationFactory == null) {
> serializationFactory = new SerializationFactory(getOrCreateConf(conf));
> }
> 116 Serializer<T> serializer = serializationFactory.getSerializer(objClass);
>
> ByteBufferOutputStream os = new ByteBufferOutputStream();
> try {
> serializer.open(os);
> 121 serializer.serialize(obj);
>
>
>
> [1] https://builds.apache.org/job/gora-trunk/org.apache.gora$gora-core/67/testReport/org.apache.gora.mapreduce/TestPersistentSerialization/testSerdeEmployee/
>
>
>
> --
> Lewis