Tuesday, 2015-02-17

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dukhlovajayaa: yes, for this case you can use update_item10:43
dukhlovajayaa: but, update_ item implementation now read old value and execute CQL UPDATE with condition - so it is quite slow operation. If your application don't care about concurrent write access to this field (if for example you have only one write thread) you can perform get_item and then put_item without any condition to optimize performace.10:47
dukhlovajayaa: but if we are talking about API only - update_item - is right way10:47
openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251310:49
ajayaadukhlov, got it. Thanks.10:49
ajayaaSo right now if there are multiple api servers would there be race conditions in update item?10:49
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dukhlovyes, always, even if we have only 1 API server11:20
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openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251312:09
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openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251313:11
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openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251314:55
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openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251316:55
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openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251317:39
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openstackgerritDmitriy Ukhlov proposed stackforge/magnetodb: Migrate custom local secondary indices to Cassandra 2.1.2  https://review.openstack.org/15251318:24
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openstackgerritCharles Wang proposed stackforge/magnetodb: Add check for non-existing table internal name for delete table  https://review.openstack.org/15680622:32
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