So you are using the correct protoc version. Then the problem should be in
the protobuf Java runtime. The missing memorizedHashCode is defined in
AbstractMessageLite:
https://github.com/google/protobuf/blob/v2.6.1/java/src/main/java/com/google/protobuf/AbstractMessageLite.java#L47
which is available from 2.6.1 protobuf runtime.

On Mon, Apr 20, 2015 at 3:25 AM, Tristan Soriano <mtr.sori...@gmail.com>
wrote:

> Hi,
>
> protoc --version
> libprotoc 2.6.1
>
> I compile using :
> protoc --java_out=./TestProto ./workspace/Coprocessor/src/sum.proto
>
>
> Le vendredi 17 avril 2015 19:49:18 UTC+2, Feng Xiao a écrit :
>
>>
>>
>> On Fri, Apr 17, 2015 at 1:40 AM, Tristan Soriano <mtr.s...@gmail.com>
>> wrote:
>>
>>> I am using protobuf 2.6.1 with java 8 (Oracle downloaded jdk 1.8.0) on
>>> linux ubuntu. I cannot locate any JAVA_HOME call in protobuf folder using
>>> 'grep'. How does protoc locate JAVA ? How can I check which version is used
>>> by who ?
>>>
>> Can you check the protoc version with "protoc --version"? How did you
>> compile your Java code? If you used Maven, what's protobuf version you
>> specified in your pom.xml file?
>>
>>
>>>
>>>
>>>
>>> Le jeudi 16 avril 2015 22:49:41 UTC+2, Feng Xiao a écrit :
>>>>
>>>> The error seems to suggest you are using a different version for protoc
>>>> and protobuf Java runtime. Could you check whether they are of the same
>>>> version?
>>>>
>>>> On Thu, Apr 16, 2015 at 3:29 AM, Tristan Soriano <mtr.s...@gmail.com>
>>>> wrote:
>>>>
>>>>>
>>>>> Hi,
>>>>> I am new to protobufers and I have some issues with the generated java
>>>>> code.
>>>>> I am successfully generating a java class from the following .proto
>>>>> file :
>>>>>
>>>>>
>>>>> ////////////////////////////////////////////////////////////////////////////////////////////////////////
>>>>> option java_package = "org.myname.hbase.Coprocessor.autogenerated";
>>>>> option java_outer_classname = "Sum";
>>>>> option java_generic_services = true;
>>>>> option java_generate_equals_and_hash = true;
>>>>> option optimize_for = SPEED;
>>>>> message SumRequest {
>>>>>     required string family = 1;
>>>>>     required string column = 2;
>>>>> }
>>>>>
>>>>> message SumResponse {
>>>>>   required int64 sum = 1 [default = 0];
>>>>> }
>>>>>
>>>>> service SumService {
>>>>>   rpc getSum(SumRequest)
>>>>>     returns (SumResponse);
>>>>> }
>>>>>
>>>>>
>>>>> //////////////////////////////////////////////////////////////////////////////////////////////////////
>>>>>
>>>>> However the generated code has error in SumResquest and SumResponse
>>>>> generated class :
>>>>> The auto generated method : HashCode( ) use an int "memoizedHashCode"
>>>>> as if it was an instance attribute but it is never declared.
>>>>> In SumRequest :
>>>>>
>>>>>     @java.lang.Override
>>>>>     public int hashCode() {
>>>>>       if (memoizedHashCode != 0) {
>>>>>         return memoizedHashCode;
>>>>>       }
>>>>>       int hash = 41;
>>>>>       hash = (19 * hash) + getDescriptorForType().hashCode();
>>>>>       if (hasFamily()) {
>>>>>         hash = (37 * hash) + FAMILY_FIELD_NUMBER;
>>>>>         hash = (53 * hash) + getFamily().hashCode();
>>>>>       }
>>>>>       if (hasColumn()) {
>>>>>         hash = (37 * hash) + COLUMN_FIELD_NUMBER;
>>>>>         hash = (53 * hash) + getColumn().hashCode();
>>>>>       }
>>>>>       hash = (29 * hash) + getUnknownFields().hashCode();
>>>>>       memoizedHashCode = hash;
>>>>>       return hash;
>>>>>     }
>>>>>
>>>>>
>>>>> //////////////////////////////////////////////////////////////////////////////////////////////////////
>>>>> In SumResponse I have an extra error : The method hashLong(long) is
>>>>> undefined for the type Internal
>>>>>
>>>>>     @java.lang.Override
>>>>>     public int hashCode() {
>>>>>       if (memoizedHashCode != 0) {
>>>>>         return memoizedHashCode;
>>>>>       }
>>>>>       int hash = 41;
>>>>>       hash = (19 * hash) + getDescriptorForType().hashCode();
>>>>>       if (hasSum()) {
>>>>>         hash = (37 * hash) + SUM_FIELD_NUMBER;
>>>>>         hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
>>>>>             getSum());
>>>>>       }
>>>>>       hash = (29 * hash) + getUnknownFields().hashCode();
>>>>>       memoizedHashCode = hash;
>>>>>       return hash;
>>>>>     }
>>>>>
>>>>>
>>>>> As we are not supposed to edit the code. Do you have any idea what the
>>>>> solution could be ?
>>>>> Should I add the missing attribute on my own, at what level and
>>>>> visibility ? How to solve my second issue ?
>>>>> Is there any risk to add directly "getSum( ) ?
>>>>>
>>>>> Thx
>>>>>
>>>>> --
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>>>>
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