Can someone explain the major points of difference between Index Mapping and Template, since many examples described were not clear enough, Can someone explain difference with an example?
Hi @Prabhav
Index -Template
As the name says this is template which an index can take. you can predefine all settings like
- primary shards
- number of replicas
- ...
And you can also define a index-mapping inside a template. (i will get to it below)
Then you also can add a patterns of indices name where theese templates should be activated. So example index-pattern in index-templates says test-*. So each index with names like test-1, test-abc etc will take the settings
Index-Mapping
Think about a document. This is a json file which lands inside an index. And a json file has attribute and values. And know for analysing elasticsearch needs to know wihch attribute contains what type of value(is it a text, or a keyword or a timestamp). So this can be defined in an index-mapping.
Conclusion: index mapping contains information about what kind of values is inside an index. An Index-template contains predefines index options(settings, mappings, analyzer) which will get adapted to an index on creation.
Helped?
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