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PHP SDK intermittently returns no value for existing document during rebalance

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Fri, 02/08/2013 - 18:16
pgrigor
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During rebalance calling getMulti with the PHP SDK will return incomplete results without throwing an exception or setting an error.

This should *never* happen. If the SDK can't reach a node it should throw an exception.

PHP SDK 1.1 / CB Community 2.0

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Wed, 02/13/2013 - 00:17
ingenthr
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I do agree, this should never happen. It could, in rare cases, hit a timeout condition.

This may happen during rebalance because that's when there is a lot more disk IO.

Can you turn up the timeout to see if it still occurs with a higher timeout? At the moment, the best way to check for an error is to do a check of getStatusCode() (full descriptions are available with getStatusMessage()). See the file couchbase-api.php included in the download or on github[1] for details on the code.

We're looking to come up with a better API here in a future release. The current one mostly mirrors pecl-memcached for compatibility.

1. https://github.com/couchbase/php-ext-couchbase/blob/master/example/couch...

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Wed, 02/13/2013 - 08:31
pgrigor
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I don't have a need to rebalance presently. I don't want to initiate one at this time because I tend to get 502s quite a bit during rebalance (see my other post on the PHP SDK SIGALRMing during rebalance).

Are you saying that I may get a timeout error without an exception being raised? I'm getting 20 items at a time with getMulti and I've only seen one item missing at a time (three nodes) -- I don't think it's a timeout problem. Furthermore, the documentation for getMulti seems to indicate that the returned key/value pair will either be key/value or key/error rather than getMulti setting the general error code. I get no key returned at all.

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