Manticore Search 2.6.0 release

We are pleased to announce the release of Manticore Search 2.6.0.

Prebuilt packages available for Debian,Ubuntu, Red Hat/CentOS, Windows and OSX can be downloaded from here.

Percolate Queries

This release introduces the feature known as percolate queries, prospective search or search in reverse. As opposed to normal workflow where documents are stored in an index and queries are run against it, this technique allows persistent storing queries and test if documents match against them. The queries are stored in a new index type – percolate – similar to a RealTime index and a new command CALL PQ can be used to test if a document or batch of documents match the stored queries.

Improvements

HTTP JSON queries can now do equality on attributes, MVA and JSON attributes can be used in inserts and updates. Updates and deletes via JSON API can be performed on distributed indexes.

A new index directive morphology_skip_fields allows defining a list of fields for which morphology does not apply.

expand_keywords can now be a query runtime directive set using the OPTION statement.

Removals

As previously announced, this release removes the support for 32bit docids.  Upgrading indexes with 32bit docids requires a full reindexing.

Upgrade

In this release we’ve changed internal protocol used by masters and agents to speak with each other. In case you run Manticoresearch in a distributed environment with multiple instances make sure your first upgrade agents, then the masters.

For a full report of changes please consult the Release note .

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Free config review

There are often optimizations that can be made to a Sphinx / Manticore setup by changing some simple directives in the configuration or making quick changes to an index definition.

Some common mistakes and issues can include:

  • doing main+delta without kill-lists, even if the delta does include updated records found in the main
  • using wildcarding with very short prefix/infix which can hammer performance in some cases
  • disabled (unintentional) seamless rotates and getting stalls on index rotations
  • adding texts as string attributes even if they are not using for any kind of operation (filtering, grouping, sorting) or mandatory to be present in results
  • using deprecated settings 

Having a quick look on the configuration can show issues or potential issues, this is why we want to offer a gift to our growing community!

When uploading your configuration file, we recommend to remove any database credentials first.

We suggest also you give as many possible details about your setup: how big is the data you have, how typical queries look and what issues you experience.

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