Hi James, >From you reply I understand that it is NOT possible to create such a view, >because each family can have different number of columns, and it could be just >one column per family for one PK, and hundreds of thousands for another PK. >How can I possibly accommodate it in a view specification, if I need to >explicitly define column by name ? Or I misunderstand something ?
Thank you, Sergey From: James Taylor <jamestay...@apache.org<mailto:jamestay...@apache.org>> Reply-To: "user@phoenix.apache.org<mailto:user@phoenix.apache.org>" <user@phoenix.apache.org<mailto:user@phoenix.apache.org>> Date: Friday, June 26, 2015 at 12:04 To: "user@phoenix.apache.org<mailto:user@phoenix.apache.org>" <user@phoenix.apache.org<mailto:user@phoenix.apache.org>> Subject: Re: create a view on existing production table ? Hi Sergey, Yes, you can create a Phoenix view over this HBase table, but you have to explicitly list columns by name (i.e. column qualifier) either at view creation time or at read time (using dynamic columns). Also, the row key must conform to what Phoenix expects if there are multiple columns in your PK. Thanks, James On Wednesday, June 24, 2015, Sergey Malov <sma...@collective.com<mailto:sma...@collective.com>> wrote: My apologies if this info can be found somewhere, I don’t see it. I have a production table “profile” with the following schema : {NAME => 'edge', BLOOMFILTER => 'ROW', VERSIONS => '2', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'false', DATA_BLOCK_ENCODING => 'FAST_DIFF', COMPRESSION => 'SNAPPY', TTL => ' FOREVER', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '1'} {NAME => 'export', BLOOMFILTER => 'ROW', VERSIONS => '2', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'false', DATA_BLOCK_ENCODING => 'FAST_DIFF', COMPRESSION => 'SNAPPY', TTL => 'FOREVER', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '1'} {NAME => 'visitor', BLOOMFILTER => 'ROW', VERSIONS => '2', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'false', DATA_BLOCK_ENCODING => 'FAST_DIFF', COMPRESSION => 'SNAPPY', TTL = > 'FOREVER', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', > REPLICATION_SCOPE => '1'} Each of these families can have variable number of column for a given key, with some having hundreds of thousands columns. Is it possible to create a Phoenix view for such a table ? Thank you, Sergey Malov
