Sean, We installed riak 1.1.1 and selected storage_backend setting to riak_kv_eleveldb_backend. The indexes were enabled by default. I did some testing and they are sending me the keys back. I used the link below which has examples.
http://basho.com/blog/technical/2011/09/14/Secondary-Indexes-in-Riak/ To create an index on objects in the existing bucket, we need to retreive and re-insert. If we need to index a field in future, we need retreive all objects and then re-insert. Thanks Mohit ________________________________ From: Sean Cribbs [[email protected]] Sent: Tuesday, April 24, 2012 11:58 AM To: Sati, Mohit Cc: [email protected] Subject: Re: preflist_exhausted error Mohit, Be aware that key filters are just a thin layer on top of full-bucket key listings. You'd be better off storing the field you want to filter in a secondary index, which more efficiently supports range queries (note that only the LevelDB storage engine currently supports secondary indexes). Barring that, you could use the special "$key" index for a range query on the key. On Tue, Apr 24, 2012 at 1:07 PM, Sati, Mohit <[email protected]<mailto:[email protected]>> wrote: Hello All, I'm getting the below error in my queries. I'm using riak 1.1.1 Riak Version: ============ $rpm -qa | grep riak riak-1.1.1-1.el6.x86_64 Riak Error: ======== HTTP/1.1 100 Continue HTTP/1.1 500 Internal Server Error Server: MochiWeb/1.1 WebMachine/1.9.0 (someone had painted it blue) Date: Tue, 24 Apr 2012 16:58:53 GMT Content-Type: application/json Content-Length: 625 {"phase":0,"error":"[preflist_exhausted]" Query: ========== My query is doing a range scan. I can only get data for 1 day. For 2 or more days it is throwing the error posted above. {"inputs":{ "bucket":"tagg_dsquery", "key_filters":[["and", [["starts_with", "dsquery-us_prm"]], [["and", [["tokenize", "-", 5], ["greater_than_eq", "20120312"]], [["tokenize", "-", 5], ["less_than_eq", "20120314"]] ]] ]]}, ... ... app.config changes: ============= map_js_vm_count - increased to 32,64,128 and 256 but not helping js_max_vm_mem - increased to 32,64,128,256,512 and 1024. js_thread_stack - increased to 64,128,256,512,1024 and 2048 (cannot go beyond) - riak would not start Can anyone help me to debug this issue. My queries cannot go beyond 1 day Thanks Mohit _______________________________________________ riak-users mailing list [email protected]<mailto:[email protected]> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com -- Sean Cribbs <[email protected]<mailto:[email protected]>> Software Engineer Basho Technologies, Inc. http://basho.com/
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