ES and Java 8. Does it worth the effort?

Elastic Stack Elasticsearch
1

Hi ,
I wander if i should start using Java 8 with my ES cluster.

Are there any benefits using Java 8 ?
For example :
faster GC , faster Java itself .. anything ES would bebefit from Java 8 ..
etc

Please share your experience.

Georgi

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2

Of course is Java 8 worth the effort.

Some highlights:

Some concurrency classes like LongAdder are already included in ES.

Java 8 JVM brings also G1 GC to its full extension. G1 GC is not faster
than CMS GC, but it scales much better over multicore and reduces
stop-the-world pauses to milliseconds.

To exploit the full advantage of Java 8, ES would need a large overhaul by
rewriting inner classes to lambda style, streams, fork/join pool etc. As
long as Lucene does not switch to Java 8, the benefit is only partial.

Jörg

On Thu, Oct 30, 2014 at 9:01 PM, Georgi Ivanov georgi.r.ivanov@gmail.com
wrote:

Hi ,
I wander if i should start using Java 8 with my ES cluster.

Are there any benefits using Java 8 ?
For example :
faster GC , faster Java itself .. anything ES would bebefit from Java 8 ..
etc

Please share your experience.

Georgi

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3

Would love to hear from Elasticsearch about plans on moving to Java 8.

Vaidik Kapoor
vaidikkapoor.info

On 31 October 2014 03:08, joergprante@gmail.com joergprante@gmail.com
wrote:

Of course is Java 8 worth the effort.

Some highlights:

Some concurrency classes like LongAdder are already included in ES.

Java 8 JVM brings also G1 GC to its full extension. G1 GC is not faster
than CMS GC, but it scales much better over multicore and reduces
stop-the-world pauses to milliseconds.

To exploit the full advantage of Java 8, ES would need a large overhaul by
rewriting inner classes to lambda style, streams, fork/join pool etc. As
long as Lucene does not switch to Java 8, the benefit is only partial.

Jörg

On Thu, Oct 30, 2014 at 9:01 PM, Georgi Ivanov georgi.r.ivanov@gmail.com
wrote:

Hi ,
I wander if i should start using Java 8 with my ES cluster.

Are there any benefits using Java 8 ?
For example :
faster GC , faster Java itself .. anything ES would bebefit from Java 8
.. etc

Please share your experience.

Georgi

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4

For JVM support, see

"We recommend installing the Java 8 update 20 or later, or Java 7 update 55
or later"

Jörg

On Fri, Oct 31, 2014 at 8:19 AM, Vaidik Kapoor kapoor.vaidik@gmail.com
wrote:

Would love to hear from Elasticsearch about plans on moving to Java 8.

Vaidik Kapoor
vaidikkapoor.info

On 31 October 2014 03:08, joergprante@gmail.com joergprante@gmail.com
wrote:

Of course is Java 8 worth the effort.

Some highlights:

Some concurrency classes like LongAdder are already included in ES.

Java 8 JVM brings also G1 GC to its full extension. G1 GC is not faster
than CMS GC, but it scales much better over multicore and reduces
stop-the-world pauses to milliseconds.

To exploit the full advantage of Java 8, ES would need a large overhaul
by rewriting inner classes to lambda style, streams, fork/join pool etc. As
long as Lucene does not switch to Java 8, the benefit is only partial.

Jörg

On Thu, Oct 30, 2014 at 9:01 PM, Georgi Ivanov <georgi.r.ivanov@gmail.com

wrote:

Hi ,
I wander if i should start using Java 8 with my ES cluster.

Are there any benefits using Java 8 ?
For example :
faster GC , faster Java itself .. anything ES would bebefit from Java 8
.. etc

Please share your experience.

Georgi

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5

We upgraded to Java 8 OpenJDK a few weeks ago - no problems seen so far.

D

On Friday, 31 October 2014 08:39:39 UTC, Jörg Prante wrote:

For JVM support, see

Elasticsearch Platform — Find real-time answers at scale | Elastic

"We recommend installing the Java 8 update 20 or later, or Java 7 update
55 or later"

Jörg

On Fri, Oct 31, 2014 at 8:19 AM, Vaidik Kapoor <kapoor...@gmail.com
<javascript:>> wrote:

Would love to hear from Elasticsearch about plans on moving to Java 8.

Vaidik Kapoor
vaidikkapoor.info

On 31 October 2014 03:08, joerg...@gmail.com <javascript:> <
joerg...@gmail.com <javascript:>> wrote:

Of course is Java 8 worth the effort.

Some highlights:

Some concurrency classes like LongAdder are already included in ES.

Java 8 JVM brings also G1 GC to its full extension. G1 GC is not faster
than CMS GC, but it scales much better over multicore and reduces
stop-the-world pauses to milliseconds.

To exploit the full advantage of Java 8, ES would need a large overhaul
by rewriting inner classes to lambda style, streams, fork/join pool etc. As
long as Lucene does not switch to Java 8, the benefit is only partial.

Jörg

On Thu, Oct 30, 2014 at 9:01 PM, Georgi Ivanov <georgi....@gmail.com
<javascript:>> wrote:

Hi ,
I wander if i should start using Java 8 with my ES cluster.

Are there any benefits using Java 8 ?
For example :
faster GC , faster Java itself .. anything ES would bebefit from Java 8
.. etc

Please share your experience.

Georgi

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6

Didn't see that, thanks for mentioning it though!

On 31 October 2014 19:39, joergprante@gmail.com joergprante@gmail.com
wrote:

For JVM support, see

Elasticsearch Platform — Find real-time answers at scale | Elastic

"We recommend installing the Java 8 update 20 or later, or Java 7 update
55 or later"

Jörg

On Fri, Oct 31, 2014 at 8:19 AM, Vaidik Kapoor kapoor.vaidik@gmail.com
wrote:

Would love to hear from Elasticsearch about plans on moving to Java 8.

Vaidik Kapoor
vaidikkapoor.info

On 31 October 2014 03:08, joergprante@gmail.com joergprante@gmail.com
wrote:

Of course is Java 8 worth the effort.

Some highlights:

Some concurrency classes like LongAdder are already included in ES.

Java 8 JVM brings also G1 GC to its full extension. G1 GC is not faster
than CMS GC, but it scales much better over multicore and reduces
stop-the-world pauses to milliseconds.

To exploit the full advantage of Java 8, ES would need a large overhaul
by rewriting inner classes to lambda style, streams, fork/join pool etc. As
long as Lucene does not switch to Java 8, the benefit is only partial.

Jörg

On Thu, Oct 30, 2014 at 9:01 PM, Georgi Ivanov <
georgi.r.ivanov@gmail.com> wrote:

Hi ,
I wander if i should start using Java 8 with my ES cluster.

Are there any benefits using Java 8 ?
For example :
faster GC , faster Java itself .. anything ES would bebefit from Java 8
.. etc

Please share your experience.

Georgi

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