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From "James Dyer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2104) DIH special command $deleteDocById dosn't skip the document and doesn't increment the deleted statistics
Date Wed, 25 May 2011 19:39:47 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13039298#comment-13039298
] 

James Dyer commented on SOLR-2104:
----------------------------------

I added a "is duplicated by" SOLR-2492 link here.  SOLR-2492 has a patch that partially fixes
the problem.

> DIH special command $deleteDocById dosn't skip the document and doesn't increment the
deleted statistics
> --------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-2104
>                 URL: https://issues.apache.org/jira/browse/SOLR-2104
>             Project: Solr
>          Issue Type: Bug
>          Components: contrib - DataImportHandler
>    Affects Versions: 1.4, 1.4.1
>            Reporter: Ephraim Ofir
>            Priority: Minor
>
> 1. Not sure it's a bug, but looks like a bug to me - if the query returns any values
other than $deleteDocById for the row you want deleted, it deletes the row but also re-adds
it with the rest of the data, so in effect the row isn't deleted.  In order to work around
this issue, you have to either make sure no data other than $deleteDocById=<id> exists
in rows to be deleted or add $skipDoc='true'
> (which I think is a little counter-intuitive, but was the better choice in my case).
 My query looks something like:
> SELECT u.id,
>        u.name,
>        ...
>        IF(u.delete_flag > 0, u.id, NULL) AS $deleteDocById,
>        IF(u.delete_flag > 0, 'true', NULL) AS $skipDoc FROM users_tb u
> 2. $deleteDocById doesn't update the statistics of deleted documents.
> This has 2 downsides, the obvious one is that you don't know if/how many documents were
deleted, the not-so-obvious one is that if your import contains only deleted items, it won't
be committed automatically by DIH and you'll have to commit it manually.

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