How to use ES & es-hadoop 5.0 under java 1.7

Elastic Stack Elasticsearch
1

Hi.

I'm running my cluster with CDH 5.8 which provides jdk 1.7.0_67 (I can't upgrade at this moment)

I tried to use ES 5.0 & es-hadoop but I'm getting an error

java.lang.UnsupportedClassVersionError: org/elasticsearch/spark/rdd/CompatUtils : Unsupported major.minor version 52.0

According to this issue, it seems like a java version mis-match problem.

But the ES Hadoop 5.0 Requirements says that:

we strongly recommend using the latest JDK 8 (at least u20 or higher). If that is not an option, use JDK 7.0 update u55 (required for Elasticsearch 1.2 or higher).

So I'm wondering how can I use ES & es-hadoop 5.0 with Java 1.7

Thanks.

2

While the ES-hadoop connector may not, Elasticsearch 5.0 requires Java 1.8. Java 1.7 is no longer supported.

3

@Christian_Dahlqvist

Thank you for your reply.

Then what does this sentence mean?

If that is not an option, use JDK 7.0 update u55

exceprted from here Requirements | Elasticsearch for Apache Hadoop [8.11] | Elastic

Thanks in advanced

4

Elasticsearch 5.0 has a different requirement on Java version than the ES-Hadoop connector.

5

@Brad_Jungsu_Heo The ES-Hadoop major version for Scala classes is a bug. I've opened a github issue for it.

6

@james.baiera

Great!

Thanks.