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Posted to notifications@couchdb.apache.org by "ILYA (JIRA)" <ji...@apache.org> on 2016/01/07 23:36:42 UTC

[jira] [Commented] (COUCHDB-2932) View query crashes if the emited key contains hidden characters

    [ https://issues.apache.org/jira/browse/COUCHDB-2932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15088289#comment-15088289 ] 

ILYA commented on COUCHDB-2932:
-------------------------------

Backtrace is
[error] req_err(4004602127) unknown_error : badarg
    [<<"dict:fetch/2 L130">>,<<"fabric_view_map:-merge_row/4-fun-2-/3 L163">>,
     <<"lists:fmerge2_1/5 L2619">>,<<"lists:merge/3 L983">>,
     <<"fabric_view_map:handle_message/3 L143">>,
     <<"rexi_utils:process_mailbox/6 L55">>,<<"fabric_view_map:go/5 L73">>,
     <<"fabric_view_map:go/6 L39">>]

This is happening because KeyDict contains keys without extra hidden chars https://github.com/apache/couchdb-fabric/blob/master/src/fabric_view_map.erl#L163


> View query crashes if the emited key contains hidden characters
> ---------------------------------------------------------------
>
>                 Key: COUCHDB-2932
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-2932
>             Project: CouchDB
>          Issue Type: Bug
>            Reporter: ILYA
>         Attachments: invisible_char.sh
>
>
> In the cases where map function of the view emits invisible characters such as U+200B. Subsequent query of the view with the keys not containing invisible characters returns `badarg`.



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