I have a similar problem. With 5 shards, querying 500K rows fails, but 400K is fine. Querying individual shards for 1.5 million rows works. All solr instances are v4.2.1 and running on separate Ubuntu VMs. It is not random, can be always reproduced by adding &rows=500000 to a query where numFound is > 500K
Is this a configuration issue, where some setting can be increased? --------------------------------------------------------------------- This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.