GitHub user HyukjinKwon opened a pull request:
https://github.com/apache/spark/pull/17642
[SPARK-20343][BUILD] Force Avro 1.7.7 in sbt build to resolve build failure
in SBT Hadoop 2.6 master on Jenkins
## What changes were proposed in this pull request?
Currently, the build fails on the SBT master build but only for Hadoop 2.6.
It seems the dependency resolution can be different.
```
[error]
/home/jenkins/workspace/spark-master-test-sbt-hadoop-2.6/core/src/main/scala/org/apache/spark/serializer/GenericAvroSerializer.scala:123:
value createDatumWriter is not a member of org.apache.avro.generic.GenericData
[error] writerCache.getOrElseUpdate(schema,
GenericData.get.createDatumWriter(schema))
[error]
```
https://amplab.cs.berkeley.edu/jenkins/view/Spark%20QA%20Test%20(Dashboard)/job/spark-master-test-sbt-hadoop-2.6/2770/consoleFull
## How was this patch tested?
I tried many ways but I was unable to reproduce this in my local. Sean also
tries the way I did but he was also unable to reproduce this.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/HyukjinKwon/spark SPARK-20343
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17642.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #17642
----
commit 1ae57f2e569462734d89d9c8c77e765859ce8393
Author: hyukjinkwon <gurwls...@gmail.com>
Date: 2017-04-15T00:25:33Z
Explicitly override Avro version
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