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From Martin Kleppmann <mar...@kleppmann.com>
Subject Re: [jira] [Updated] (AVRO-1760) Thread scalability problem with the use of SynchronizedMap
Date Mon, 18 Jan 2016 17:27:38 GMT
There is a good selection of open issues with Avro-C here:

https://issues.apache.org/jira/issues/?jql=project%20%3D%20AVRO%20AND%20status%20in%20(Open%2C%20%22In%20Progress%22%2C%20Reopened%2C%20%22Patch%20Available%22)%20AND%20component%20%3D%20c%20

Contributions welcome :)

> On 17 Jan 2016, at 15:21, Nges B <nges.brian@gmail.com> wrote:
> 
> Hello,
> I have been here for quite sometime and rally interested in the avro C
> API project.
> I will really like to do some work on it. I have been to the Bug
> tracker and there is no recent bug on it .
> Please where can I start?
> Thanks
> 
> 
> On 1/16/16, Mulugeta Mammo (JIRA) <jira@apache.org> wrote:
>> 
>>     [
>> https://issues.apache.org/jira/browse/AVRO-1760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
>> ]
>> 
>> Mulugeta Mammo updated AVRO-1760:
>> ---------------------------------
>>    Attachment: AVRO-1760.pdf
>> 
>> added performance comparison document.
>> 
>>> Thread scalability problem with the use of SynchronizedMap
>>> ----------------------------------------------------------
>>> 
>>>                Key: AVRO-1760
>>>                URL: https://issues.apache.org/jira/browse/AVRO-1760
>>>            Project: Avro
>>>         Issue Type: Improvement
>>>         Components: java
>>>   Affects Versions: 1.7.4, 1.7.5, 1.7.6, 1.7.7, 1.8.0, 1.8.1, 1.9.0
>>>           Reporter: Mulugeta Mammo
>>>           Assignee: Tom White
>>>           Priority: Critical
>>>             Labels: patch, performance
>>>            Fix For: 1.8.0
>>> 
>>>        Attachments: AVRO-1760.patch, AVRO-1760.patch, AVRO-1760.patch,
>>> AVRO-1760.pdf
>>> 
>>> 
>>> While running Adam Genomics (which uses Avro) on Apache Spark, we
>>> discovered that threads (tasks in Spark Context) block in Avro while
>>> executing the getDefaultValue(Field field) method in
>>> https://github.com/apache/avro/blob/trunk/lang/java/avro/src/main/java/org/apache/avro/generic/GenericData.java
>> 
>> 
>> 
>> --
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>> 


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