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#mongodb logs for Friday the 15th of March, 2013
[01:47:30] <bjori> AAA_awright: http://docs.mongodb.org/meta-driver/latest/legacy/mongodb-wire-protocol/ should get you started..
[01:48:21] <AAA_awright> At one point a driver I was using was allowing . and $ characters in the query
[01:48:46] <AAA_awright> There doesn't seem to be any standard on what's appropriate and what's not, and where that's handled
[01:49:13] <AAA_awright> How is replication handled? I'm having no end of problems from that from my client library
[01:50:45] <AAA_awright> I don't even know how that works from the user end... what do I have to do to ensure that my library can fall back to the necessary servers?
[01:52:32] <bjori> are you talking about picking a secondary to execute commands/queries on with depending on its read preferences?
[01:59:14] <AAA_awright> bjori: Yeah, I'm looking to specify read preferences, write requirements (guarentee that it's committed), and automatic failover
[01:59:32] <AAA_awright> And I'm not even very sure how to do that as a user, never mind a developer
[03:40:04] <bjori> AAA_awright: the failover is done with periodic ismaster/ping commands to all of the servers
[03:42:08] <bjori> http://docs.mongodb.org/meta-driver/latest/ this page is aimed to document how things should behave.. but currently its lacking boatload of info
[03:42:14] <AAA_awright> But some of this is up to the driver... for instance, I can seem to store {"http://example.com/": 10} just fine over the wire protocol
[03:47:14] <bjori> using a . for a key is a very bad idea, because it breaks querying with the dot notation
[03:50:26] <bjori> I've no idea why your driver doesn't allow you to use %, all the 10gen drivers allow it just fine afaik
[04:03:04] <abhinav> Hi guys. Can you please help me with this http://stackoverflow.com/questions/15404850/return-alias-field-via-json-using-mongoid
[04:36:26] <ctorp> Can anyone see something wrong with this mapReduce? http://www.hastebin.com/xedadiwuga.js
[04:37:02] <ctorp> 13000+ records, but that MR shows about 200 results. It should be more like 12000+
[07:48:44] <Garo_> It seems that the $or : [] -query does each or clause in parallel, but how it chooses which it will return? The first one which finishes?
[09:48:01] <raffer__> Hi. For our mongodb we use a primary/secondary setup. If the primary goes down, 2 becomes 1. If the first is back up, he is 2. Now HAProxy routes every request to the 2 ... (unless we rewrite the HAProxy of course...)
[09:49:17] <fredix> with mongofiles command is it possible to delete files with a jocker like *.txt ?
[09:49:34] <fredix> I try this but it doesn't works mongofiles -h 9.0.0.3 -d nodecast_prod delete *.cfu
[11:11:58] <marcqualie> Does anyone know if atom processor boxes are okay to use for sharded config servers?
[12:22:05] <Vill> Greetings Folks, is #mongodb an active IRC channel, or just a dead-end on the path to NoSQL world? Is someone willing to enlighten a newbie like me with their piece of knowledge?
[12:25:37] <FrenkyNet|lunch> Vill: and there are quite a lot of resources you could first go through before asking questions :)
[12:27:33] <Vill> I have a data modeling question, I know that MongoDB doesn't support ACID transactions, I'm currently trying to transfer from RDBMS to MongoDB with database holding Customer-Contract-Process-Product. But at some point I realized that the ACID operations can be implemented inside my server scripts. What my problem is, in the current MS Access database, I've found a lot of data inconsistency...
[12:27:35] <Vill> ...and even some circular references. I just love, how easy it is to organize all Customer details in one Document. But now I need to step into "process" which requires advanced technique...
[12:29:01] <Vill> The process, is not a simple "in-out" chain, where you get material, and "do operation" on it, and return product, it's manufacturing chain, where each operation, can require multiple parts, and different processes, and different tools. My question is: Is NoSQL a way to go with this?
[12:49:31] <BadCodSmell> In mongo nosql webscale 2.0 schemaless document object storage engine, if I have a struct as such: {y:1,x:[{a:1,b:2},{a:2,b:2}]} is there a way to update the array child that has a:2 so that b:3?
[13:04:18] <BadCodSmell> What if I have an array of docs with an array of docs with an array of docs?
[13:18:11] <BadCodSmell> db.sq1.update({x:2, 'y.b.i':1},{$set:{'y.$.b.$.h':0}},{ multi: true }); can't append to array using string field name [$]
[14:24:30] <baegle> Trying to run a find query from the command line without entering into the mongo shell, being told db.collection_name is undefined. Any idea why?
[14:33:03] <gazarsgo> is it a php driver thing that i can't insert json directly to mongo, or a mongo thing ?
[14:35:48] <baegle> So I have the following that works in the mongo shell: db.products.find({drsrcId:/.{24}/},{vcode:1});
[14:36:14] <baegle> I put this exact same line in a file and ran: mongo localhost:27017/baws_uat script.js and I get nothing
[14:36:42] <baegle> I don't understand the difference between running it as a script file and running it directly in the cli, anyone know?
[15:17:37] <failshell> hello. im running sh.stopBalancer() on a test cluster, and it seems to be taking a very long time. how long is it supposed to take to stop it?
[15:53:39] <Scrat> in a findAndModify upsert, is it possible to skip updating a field if it already exists?
[15:54:17] <veesahni> how does the aggregation framework play with the interpreter lock? Is the collection it's running over lock while a query is running?
[16:46:15] <sinisa> i wanted to tell somebody from BI that their "views" on BI site looks like they have mind of their own :)
[17:49:10] <gazarsgo> had to convert the example cloudformation template to use vpc … that was the biggest pain. all the mongo stuff was super easy and straightforward :)
[17:59:45] <gazarsgo> so if i have a mongodb node that's run out of space, how can i get it to replicate to my new replicaset ?
[18:04:49] <JoeyJoeJo> How can I count the results from a distinct() query? I tried db.collection.distinct('field').count() but that didn't work
[18:46:48] <OliverJAsh> I have an array of documents, returned from save. I now want to do a query that finds any documents added since (newer than the newest in the current collection). Can you think of a query for doing that? I have a field on the schema called date which is a JavaScript date object, such as "Tue Mar 12 2013 17:46:07 GMT+0000 (GMT)"
[18:59:56] <cmacmurray> After noon, running version 1.8 did an rs.stepDown() on a node, and now they are all secondary
[19:29:31] <cmacmurray> Hi, I have another interesting issue going on with by local db gettting really big
[19:35:32] <JoeyJoeJo> I want to find one field in each document and return the number of times each data point occurs. For example, if the field has data between 1-10 and in 5 documents field =2 and 3 documents field = 7, how can I return 5 and 3?
[19:38:42] <JoeyJoeJo> Or maybe a better example, in 5 documents the field field == foo and in 3 documents field == bar. How do I return foo:5, bar:3?
[20:34:33] <failshell> can anyone explain to me how the balancer works in a cluster? i was under the impression it was running constantly
[22:19:21] <drockna> I am using mongohub. When I look at the monitoring it says locked %. does anyone know what that could be refering to?
[22:25:24] <broerd> Can you do a query with $lt or $gt where the value being compared is another field in the same record?
[22:26:04] <broerd> Context: We have items in our database that contain "old_price" and "price" (current price). I want to see where there has been a price reduction by comparing the two.
[22:46:13] <defunctzombie> if I have documents where a field is a string (of a number) or a number value
[22:47:53] <rweeks> Hi, I'm trying to do keyword searching with mongodb. I've already extracted the keywords I want from my documents. The idea is to search as you type, so my plan is to tokenize the query string, do a full match on all but the last token and a regex match on the last token (because the user is maybe still typing it).
[22:48:47] <rweeks> I've tried several different queries but I'm not getting the results I expect. Both the "full match on tokens 1 to n-1" and "regex match on token n" work separately, but together I get 0 results.