15 October 2014

This Week in Elasticsearch - October 15, 2014

By Alexander Reelsen

Welcome to This Week in Elasticsearch. In this roundup, we try to inform you about the latest and greatest changes in Elasticsearch. We cover what happened in the GitHub repositories, as well as many Elasticsearch events happening worldwide, and give you a small peek into the future of the project.

Elasticsearch Core

  • Scripting: Created a parameter parse to standardised script options (#7977, master and 1.5)
  • cat API: add total index memory in _cat/indices (#7008, master and 1.5)
  • Parent/child: has_parent filter must take parent filter into account when executing the inner query/filter (#8020, master, 1.5, 1.4 and 1.3)
  • Internal: split shard search request into a local and a transport variant (#7855, master, 1.5 and 1.4)
  • Core: Make fetch phase nested doc aware (#7164, master and 1.5)
  • Core: Fix serialization of short[] arrays (#8025, master and 1.5)
  • Aggregations: Fixes scripted metrics aggregation when used as a sub aggregation (#8036, master, 1.5 and 1.4)
  • Mapper: Throw exception if null_value is set to null (#7273, master, 1.5, 1.4 and 1.3)
  • Admin: Fix upgrade logic to work on lucene major version differences (#8013, master, 1.5 and 1.4)
  • Core: Simplify discovery node initialization if version is unknown (#8055, master, 1.5 and 1.4)
  • Scripting: Clear the GroovyClassLoader cache before compiling (#8062, master, 1.5, 1.4 and 1.3)
  • Internal: Fix serialization of PendingClusterTask.timeInQueue (#8077, master, 1.5 and 1.4)
  • Core: Be more explicit if index.version.created is not set (#8018, master, 1.5 and 1.4)
  • Core: don't spin 100% CPU when disabling refresh_interval (#8085, master, 1.5, 1.4 and 1.3)
  • Core: Add cluster and index state checksums (#7586, master and 1.5)
  • Internal: dangling indices import ignores aliases (#8059, master and 1.5)

Elasticsearch Ecosystem

Here's some more information about what is happening in the ecosystem we are maintaining around the ELK stack - that's Elasticsearch plus Logstash and Kibana - including plugin and driver releases.

Slides & Videos

Honza Kral on the Elasticsearch Language Clients

Where to Find Us

We'd love to feature all the great Elasticsearch, Logstash, and Kibana presentations and meetups happening worldwide in this section. If you're speaking or hosting a meetup, let our Director of Developer Relations, Leslie Hawthorn, know!


We're a proud sponsor of the 5th anniversary of DevOps Days Belgium, held in its original hometown of Ghent. Elasticsearch will have a booth at the conference, so stop by and say hello to Leslie Hawthorn and Alan Hardy between sessions. We'll be at DevOps Days October 27-28th.


Colin Surprenant will regale all with tales of the ELK stack at the next Montreal Elasticsearch Meetup. You can join Colin this Thursday, Oct. 16th at 6:30 PM. Register now to save your spot.


Zeng Yong, aka Medcl, is one of our most active community members in China. He has an upcoming talk on all things Elasticsearch: Real-time data analysis at QCon Shanghai on October 17, 2014.

Medcl is also busy convening the 3rd annual Elasticsearch Users Conference in China for October 25th. You can find out more information about the event and register on meetup.com.


  • David Pilato will be heading to BDX.io to tell you all about how to Make Sense of your Big Data. BDX.io takes place on October 17th in Bordeaux.
  • David will run a hands on Elasticsearch and Kibana workshop at Forum PHP Paris 2014. You can join David on October 23rd from 9:30 AM to 1:30 PM, though separate registration is required. Forum PHP Paris runs October 23-24th at the Beffroi Montrouge.
  • The 10th Elasticsearch Paris Meetup is on for November 13th. RSVPs won't open until two weeks before the meetup, so stay tuned to this space so you can get registered.


If you happen to be in Karlsruhe on October 16th, you can catch Patrick Peschlow on Elasticsearch Performance in a Nutshell at the Search Meetup Karlsruhe. Registration is now open, and the meetup will begin at 7:15 PM.

For folks in Berlin, we'll have a booth at the GOTO Berlin conference, plus two awesome talks from Elasticsearchers:

Join us at the Kosmos Event Center on November 6th and 7th for GOTO Berlin 2014!


The Hyderabad Scalability Meetup group is hosting a getting started with Elasticsearch hackathon on October 18th. Register now to save your place, looks like space is limited!


  • On October 20th, community member Stefano Pampaloni will take the stage at the next IBM event in Milan to talk about Elasticsearch on IBM Power8 systems.
  • Then on October 30th, we'll be working with Zimbra & Friends - the official Zimbra event in Italy (organized by Seacom) - to help show the ELK stack as a Zimbra log analyzer. And who knows, there may even be a meet up happening as well...stay tuned for more.


  • Honza Kral will be speaking at PyCon Poland 2014. The conference runs from October 16-19th in Orle Gniazdo. Honza's keynote address takes place on Thursday night at 7 PM, and he's speaking on Polyglot Persistence.
  • Honza will speak at PolyConf 2014 on Elasticsearch's language clients, Bridging the gap: one API, 5 languages. Honza takes the stage at 5:30 PM on October 30th, and the conference runs the 30th-31st in Poznan.


Honza Kral will be speaking at the Øredev conference in Malmö on Analyzing & Search Data Using Elastisearch. The conference runs Nov. 4-7th, and Honza takes the stage on Nov. 6th at 5:40 PM.


David Pilato will return to Soft-Shake in Geneva once again this year. He will speak on Advanced Search for Your Legacy Application in the Big Data Track. Soft-Shake takes place on October 23-24th, and David will speak in Slot 5 on Thursday.

United Kingdom

United States

  • New meetup: The Grand Rapids PHP Developers user group will get together on October 21st, and they'll be talking Logstash and Kibana. Register now to save your place.
  • New meetup: The Elasticsearch LAX meetup group will convene on Oct. 29th to talk Multilingual text search + Elasticsearch from the bottom up. Register now to save your place.
  • New meetup: The next Elasticsearch San Francisco meetup is on for October 30th. Register now to save your place.
  • We'll be in the exhibits hall at Strata and Hadoop World NYC on October 13-15th. But don't just pop by our booth (P1) - we've also scheduled a special Strata NYC Meetup on Oct. 15th at Twitter's New York offices. Amongst other great talks on offer, you can hear from Costin Leau, lead developer for Elasticsearch for Apache Hadoop. He'll tell you all about our new support for SparkSQL and Apache Storm. Get registered for the meetup now, because this one always fills lightning-fast. (And many thanks to the fine folks at Twitter for hosting us.)
  • Leslie Hawthorn will be speaking at the All Things Open Conference on What Does Big Data Really Mean for Your Business? All Things Open takes place October 22-23 in Raleigh, North Carolina, and Leslie will speak at 2:15 PM on Wednesday. (You might enjoy this sneak preview of her talk, too.)
  • The Elasticsearch Minneapolis Meetup will host their second meeting on Oct. 22nd. Sign up now to learn all about how TrackJS & Infinite Campus use Elasticsearch. Register now to save your place - turns out our CTO, Shay Banon, will make a special guest appearance for open Q&A on all things Elasticsearch!
  • The Elasticsearch Phoenix Meetup has just kicked off, and we have a special treat for the first meeting: Meet the Kibana team! You can register now to save your place; the meetup will take place on October 22nd.
  • The Elasticsearch Seattle Meetup group will be hosting their inaugural meeting on October 23rd. First up: Kibana - deployment, configuration, use and extending. You can register now to save your place.
  • Kurt Hurtado will speak at the San Francisco Cloud Mafia meetup on November 5th, where he'll talk the ELK stack in a DevOps environment. This meetup is incredibly popular, so get registered now if you'd like to attend.

Where to Find You

Our Director of Developer Relations, Leslie Hawthorn, is hard at work to help folks create more Elasticsearch meetup groups and to help meetup organizers find more speakers. If you are interested in either effort, let her know.

Oh yeah, we're also hiring. If you'd like us to find you for employment purposes, just drop us a note.  We care more about your skill set and passion for Elasticsearch, Kibana, and Logstash than where you rest your head.


If you are interested in Elasticsearch training we have courses taught by our core developers coming up in:

  • Palo Alto - October 29, 2014 (Core Elasticsearch training)
  • London - October 30, 2014 (Getting started workshop)
  • San Francisco - November 05, 2014 (Getting started workshop)
  • Berlin - November 11, 2014 (Core Elasticsearch Training)
  • Reston - November 13, 2014 (Core Elasticsearch Training)
  • Paris - November 17, 2014 (Getting started workshop)
  • Bangalore - November 17, 2014 (Getting started workshop)
  • Paris - November 18, 2014 (Core Elasticsearch Training)
  • Bangalore - November 18, 2014 (Core Elasticsearch Training)
  • London - November 26, 2014 (Core Elasticsearch Training)