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From "Benjamin Lerer (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-12598) BailErrorStragery alike for ANTLR grammar parsing
Date Tue, 11 Oct 2016 08:59:20 GMT


Benjamin Lerer commented on CASSANDRA-12598:

Committed into 3.X at 830954304ebcf450b213c9ebc53cb4eefb87f02d and merged into trunk

> BailErrorStragery alike for ANTLR grammar parsing
> -------------------------------------------------
>                 Key: CASSANDRA-12598
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>            Reporter: Berenguer Blasi
>            Assignee: Berenguer Blasi
>             Fix For: 3.x
> CQL parsing is missing a mechanism similar to
> This solves:
> - Stopping parsing instead of continuing when we've got already an error which is wasteful.
> - Any skipped java code tied to 'recovered' missing tokens might later cause java exceptions
(think non-init variables, non incremented integers (div by zero), etc.) which will bubble
up directly and will hide properly formatted error messages to the user with no indication
on what went wrong at all. Just a cryptic NPE i.e

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