Re: [mongodb-user] Abridged summary of mongodb-user@googlegroups.com - 66 Messages in 27 Topics
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Subject: [mongodb-user] Abridged summary of mongod...@googlegroups.com - 66
Messages in 27 Topics
Group: http://groups.google.com/group/mongodb-user/topics
- c# driver - "Connection Requires Credentials" when calling Server.GetLastError() [6 Updates]
- C# driver exceptions [2 Updates]
- If aggregation Framework allow the user to define their own Expression [2 Updates]
- Aggregation Framework Expression $year/$month/$dayOfMonth return wrong value. [2 Updates]
- How to use full text search in MongoDB? [13 Updates]
- MapReduce randomly failing on same DataSet [3 Updates]
- ClientCursor::yield can't unlock b/c of recursive lock [1 Update]
- A bit of query optimisation help! [2 Updates]
- db.runCommand addshard is erroring out. [1 Update]
- Very slow response from Slave with network partition [1 Update]
- Data corruption, again [1 Update]
- MongoDB 2.0.2 MapReduce Assertion with Authenticated Shards [1 Update]
- ConvertToCapped 29TB - "can't map file memory" when replication is off [1 Update]
- Should I be worried about these stats? [4 Updates]
- How to do distinct using aggregation framework [4 Updates]
- How to use pipeline operator $out [2 Updates]
- if i remove sharding server when the server is all right, does it break down all data? [1 Update]
- validate command returns valid false but no errors [1 Update]
- SplitVector Command failed [1 Update]
- BSON vs JSON performance [3 Updates]
- creating large indexes (larger than memory) [2 Updates]
- using replication to off load work and then gather it [1 Update]
- Major Write Lock Issues without a lot of writes.. [3 Updates]
- Using Map/Reduce to replicate RRD Derive [2 Updates]
- Aggregation Framework to Group by Day [3 Updates]
- Aggregation framework slower than group()? [2 Updates]
- Is it possible to replace entire array (all elements) by Update.Set() - using C# [1 Update]
Sam Martin <sambo...@gmail.com> Feb 12 06:28AM -0800
Hi all,
This must be something I'm doing wrong as I can't find any other examples of the error.
When creating a server object using a URI containing a username, password and database, e.g. ...more
Hi all,
This must be something I'm doing wrong as I can't find any other examples of the error.
When creating a server object using a URI containing a username, password and database, e.g. ...more
Robert Stam <rob...@10gen.com> Feb 12 09:45AM -0500
Can you show a bit more of your code?
Are you using RequestStart?
What version of the C# driver are you using?
Can you provide a full stack trace? (You can remove the part of the stack ...more
Can you show a bit more of your code?
Are you using RequestStart?
What version of the C# driver are you using?
Can you provide a full stack trace? (You can remove the part of the stack ...more
Robert Stam <rob...@10gen.com> Feb 12 10:00AM -0500
I can reproduce this on my machine using version 2.0.2 of the server. The
problem is that the GetLastError command is sent to the admin database, but
in this scenario the provided credentials are ...more
I can reproduce this on my machine using version 2.0.2 of the server. The
problem is that the GetLastError command is sent to the admin database, but
in this scenario the provided credentials are ...more
Robert Stam <rob...@10gen.com> Feb 12 10:16AM -0500
Stepping through the code it's starting to look like this is an issue in
the driver, not the server. But it's going to take me awhile to figure out
what to do about it, so in the meantime your best ...more
Stepping through the code it's starting to look like this is an issue in
the driver, not the server. But it's going to take me awhile to figure out
what to do about it, so in the meantime your best ...more
Sam Martin <sambo...@gmail.com> Feb 12 07:17AM -0800
hi robert,
here sample, by the looks of it too late
Server= MongoServer.Create("mongodb://
u:p...@accno.mongolab.com:accno/dbname");
Db= ...more
hi robert,
here sample, by the looks of it too late
Server= MongoServer.Create("mongodb://
u:p...@accno.mongolab.com:accno/dbname");
Db= ...more
Sam Martin <sambo...@gmail.com> Feb 12 07:22AM -0800
Hi Robert,
Yes, update with SafeMode.True worked as expected.
Leave it with you on the GetLastError() problem, but I'm good for now.
Thanks for your help.
Sam
...more
Hi Robert,
Yes, update with SafeMode.True worked as expected.
Leave it with you on the GetLastError() problem, but I'm good for now.
Thanks for your help.
Sam
...more
Gino <emit...@gmail.com> Feb 12 02:11AM -0800
Hi,
it seems to me that the c# driver is throwing exceptions around
internally when auth is enabled. When i turn on breaking on all thrown
CLR exceptions in VS. I keep getting the following:
...more
Hi,
it seems to me that the c# driver is throwing exceptions around
internally when auth is enabled. When i turn on breaking on all thrown
CLR exceptions in VS. I keep getting the following:
...more
Robert Stam <rob...@10gen.com> Feb 12 09:37AM -0500
You are right, this is very annoying.
The history behind this is that the server didn't used to require
authentication for the buildInfo command. At one point the server was
changed to require ...more
You are right, this is very annoying.
The history behind this is that the server didn't used to require
authentication for the buildInfo command. At one point the server was
changed to require ...more
songhe yang <songh...@gmail.com> Feb 12 04:48AM -0800
RT
e.g: split a string field into array.
...more
RT
e.g: split a string field into array.
...more
Scott Hernandez <scotthe...@gmail.com> Feb 12 09:26AM -0500
Please file a feature request in jira (http://jira.mongodb.org) in the core
server project.
...more
Please file a feature request in jira (http://jira.mongodb.org) in the core
server project.
...more
songhe yang <songh...@gmail.com> Feb 12 04:43AM -0800
I have a collection, detail as follows:
e.g: userlog document:
{ "uselog_id" : 53994879, "user_id" : 277797, "visit_time" :
ISODate("2012-02-10T16:00:03Z"), "_id" : ...more
I have a collection, detail as follows:
e.g: userlog document:
{ "uselog_id" : 53994879, "user_id" : 277797, "visit_time" :
ISODate("2012-02-10T16:00:03Z"), "_id" : ...more
Scott Hernandez <scotthe...@gmail.com> Feb 12 09:24AM -0500
The field name is mispelled. Should be visit_time not visit_date.
...more
The field name is mispelled. Should be visit_time not visit_date.
...more
Skall <skall...@gmail.com> Feb 12 02:09AM -0800
You can use MongoLantern 0.7 for mongodb fulltext search. It's having
all basic features which might be required for fulltext search engine.
Please let me know whether it serves your purpose.
...more
You can use MongoLantern 0.7 for mongodb fulltext search. It's having
all basic features which might be required for fulltext search engine.
Please let me know whether it serves your purpose.
...more
Andreas Jung <li...@zopyx.com> Feb 12 11:13AM +0100
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Why would one want to use MongoLatern compared to existing
enterprise-level open-source widely-used and community-supported
solutions like Solr, ...more
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Why would one want to use MongoLatern compared to existing
enterprise-level open-source widely-used and community-supported
solutions like Solr, ...more
"Sougata Pal." <skall...@gmail.com> Feb 12 04:00PM +0530
The only reason MongoLantern is entire depends upon MongoDB so it can use
all best practices from MongoDB. As well as one don't have to read or
maintain differentiated architecture for search ...more
The only reason MongoLantern is entire depends upon MongoDB so it can use
all best practices from MongoDB. As well as one don't have to read or
maintain differentiated architecture for search ...more
Andreas Jung <li...@zopyx.com> Feb 12 11:37AM +0100
I don't want to be offending but reading through the MongoLatern code: your solution
is far away from one would call a reasonable and powerfull fulltext indexing solution.
The mentioned existing ...more
I don't want to be offending but reading through the MongoLatern code: your solution
is far away from one would call a reasonable and powerfull fulltext indexing solution.
The mentioned existing ...more
"Sougata Pal." <skall...@gmail.com> Feb 12 04:11PM +0530
Yes. You are right. The initiative is only 1 months old. So we need to
test it with different use cases to achieve fully featured fulltext search
engine. Can you please suggest something if ...more
Yes. You are right. The initiative is only 1 months old. So we need to
test it with different use cases to achieve fully featured fulltext search
engine. Can you please suggest something if ...more
Andreas Jung <li...@zopyx.com> Feb 12 11:48AM +0100
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Sougata Pal. wrote:
> to test it with different use cases to achieve fully featured
> fulltext search engine. Can you please suggest something ...more
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Sougata Pal. wrote:
> to test it with different use cases to achieve fully featured
> fulltext search engine. Can you please suggest something ...more
"Sougata Pal." <skall...@gmail.com> Feb 12 04:32PM +0530
Ok.
I just looked at Zope. Your evaluations having potentials values to me. But
I still will love to continue with this trial, and wait to achieve best
results as of standards.
* ...more
Ok.
I just looked at Zope. Your evaluations having potentials values to me. But
I still will love to continue with this trial, and wait to achieve best
results as of standards.
* ...more
Sam Millman <sam.m...@gmail.com> Feb 12 11:23AM
Mongolatern does look good and all but it does lack a lot of things:
- Index barrels
- A scalable querying strategy (it currently uses regexs to form a huge
query, by the looks of the surce code) ...more
Mongolatern does look good and all but it does lack a lot of things:
- Index barrels
- A scalable querying strategy (it currently uses regexs to form a huge
query, by the looks of the surce code) ...more
"Sougata Pal." <skall...@gmail.com> Feb 12 05:03PM +0530
Hi Sam,
You are right. Currently I am trying to achive the best search result
using regex and all, which is not expected at all.
The classes are very similar to Zend Lucene to help developer ...more
Hi Sam,
You are right. Currently I am trying to achive the best search result
using regex and all, which is not expected at all.
The classes are very similar to Zend Lucene to help developer ...more
Sam Millman <sam.m...@gmail.com> Feb 12 12:48PM
Sounds good except:
"Currenly we are targeting to achieve search results & features very
similar to MySQL."
Many SQL experts (if not all, including myself, ironically I am a RDBA by ...more
Sounds good except:
"Currenly we are targeting to achieve search results & features very
similar to MySQL."
Many SQL experts (if not all, including myself, ironically I am a RDBA by ...more
"Sougata Pal." <skall...@gmail.com> Feb 12 07:24PM +0530
Yes. True. Current version results are quite good in terms of quality, but
not having vast options yet as software is quite young. We are targeting
something which could use mongodb api for scaling ...more
Yes. True. Current version results are quite good in terms of quality, but
not having vast options yet as software is quite young. We are targeting
something which could use mongodb api for scaling ...more
Andreas Jung <li...@zopyx.com> Feb 12 03:01PM +0100
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Sam Millman wrote:
> Mongolatern does look good and all but it does lack a lot of things:
> - Index barrels
What are index barells?
...more
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Sam Millman wrote:
> Mongolatern does look good and all but it does lack a lot of things:
> - Index barrels
What are index barells?
...more
Sam Millman <sam.m...@gmail.com> Feb 12 02:09PM
@Andreas: http://infolab.stanford.edu/~backrub/google.html read this its
good, you will notice in the diagram Brin provides the index is sorted into
"barrels", it is quite complex exactly how these ...more
@Andreas: http://infolab.stanford.edu/~backrub/google.html read this its
good, you will notice in the diagram Brin provides the index is sorted into
"barrels", it is quite complex exactly how these ...more
Eliot Horowitz <el...@10gen.com> Feb 12 01:31AM -0500
Seems to be a problem with stored js.
Can you send db.system.js.find() ?
...more
Seems to be a problem with stored js.
Can you send db.system.js.find() ?
...more
Travis Smith <tra...@legomaster.net> Feb 12 08:41AM -0500
At first, I was trying to use stored js for the MapReduce. I figured
using MongoMigrations would make that easy, but I could never figure
out how to get the map reduce function see the stored js ...more
At first, I was trying to use stored js for the MapReduce. I figured
using MongoMigrations would make that easy, but I could never figure
out how to get the map reduce function see the stored js ...more
Eliot Horowitz <el...@10gen.com> Feb 12 08:57AM -0500
The problem is that "odd" doesn't have a "value" field.
You can either drop it or add a value.
...more
The problem is that "odd" doesn't have a "value" field.
You can either drop it or add a value.
...more
Chris Clarke <c...@talis.com> Feb 12 02:00AM -0800
Hi Antoine,
I think our first route will be to ensure we're using a more suitably
sized server to run this job (this is just a test instance on EC2) and
see if the lock yield situation improves. ...more
Hi Antoine,
I think our first route will be to ensure we're using a more suitably
sized server to run this job (this is just a test instance on EC2) and
see if the lock yield situation improves. ...more
Eliot Horowitz <el...@10gen.com> Feb 12 01:26AM -0500
Do you know which part is slow?
How many different browsers are there?
...more
Do you know which part is slow?
How many different browsers are there?
...more
Raxit Sheth <raxitsh...@gmail.com> Feb 12 12:29PM +0530
What you are trying to do is, trying to analyze some property/value into
existing data set. <and not modify it !>
You want it for real-time processing or batch processing ?
What is acceptable ...more
What you are trying to do is, trying to analyze some property/value into
existing data set. <and not modify it !>
You want it for real-time processing or batch processing ?
What is acceptable ...more
Eliot Horowitz <el...@10gen.com> Feb 12 01:30AM -0500
The user doesn't have to be the same.
--keyfile is for all mongos/mongod, not app servers.
...more
The user doesn't have to be the same.
--keyfile is for all mongos/mongod, not app servers.
...more
Eliot Horowitz <el...@10gen.com> Feb 12 01:28AM -0500
Its probably safe to keep it ~ 1 sec.
On Thu, Feb 9, 2012 at 9:53 AM, Emanuele Bragagnolo
...more
Its probably safe to keep it ~ 1 sec.
On Thu, Feb 9, 2012 at 9:53 AM, Emanuele Bragagnolo
...more
Eliot Horowitz <el...@10gen.com> Feb 12 01:27AM -0500
Is this in a replica set?
If so, are the secondaries ok?
Can you start the server with --objcheck?
If not a replica set - I would highly recommend for both durability
and to help diagnose.
...more
Is this in a replica set?
If so, are the secondaries ok?
Can you start the server with --objcheck?
If not a replica set - I would highly recommend for both durability
and to help diagnose.
...more
Eliot Horowitz <el...@10gen.com> Feb 12 01:24AM -0500
Can you send the map/reduce code from this?
On Thu, Feb 9, 2012 at 3:00 PM, George Macon
...more
Can you send the map/reduce code from this?
On Thu, Feb 9, 2012 at 3:00 PM, George Macon
...more
John Arrowwood <Jo...@Irie-Inc.com> Feb 11 04:48PM -0500
insert query update delete getmore command flushes mapped vsize res
faults locked % idx miss % qr|qw ar|aw netIn netOut conn time
576 0 0 0 0 1 ...more
insert query update delete getmore command flushes mapped vsize res
faults locked % idx miss % qr|qw ar|aw netIn netOut conn time
576 0 0 0 0 1 ...more
Scott Hernandez <scotthe...@gmail.com> Feb 11 06:56PM -0500
I'd say you need disks with better throughput and which support more
IO operations.
Can you run mongostat and iostat -xm 2 for a few minutes and post to
gist/pastie/pastebin?
...more
I'd say you need disks with better throughput and which support more
IO operations.
Can you run mongostat and iostat -xm 2 for a few minutes and post to
gist/pastie/pastebin?
...more
John Arrowwood <Jo...@JohnArrowwood.com> Feb 11 10:53PM -0500
mongostat: http://pastebin.com/anSv0N6x
iostat: http://pastebin.com/Pw1r8rw3
And yes, the disk is a SAN that was mounted onto the server, so I'm not
surprised. But this is a proof of concept ...more
mongostat: http://pastebin.com/anSv0N6x
iostat: http://pastebin.com/Pw1r8rw3
And yes, the disk is a SAN that was mounted onto the server, so I'm not
surprised. But this is a proof of concept ...more
Scott Hernandez <scotthe...@gmail.com> Feb 12 01:06AM -0500
It is hard to say what is going on. It seems like the iostat data is small
subset of time in the mongostat data. Not sure where to line it up for
comparison.
Are these inserts on a new ...more
It is hard to say what is going on. It seems like the iostat data is small
subset of time in the mongostat data. Not sure where to line it up for
comparison.
Are these inserts on a new ...more
Scott Hernandez <scotthe...@gmail.com> Feb 11 09:25AM -0500
You use $group. Are you just trying to get the number or the list of
distinct values?
...more
You use $group. Are you just trying to get the number or the list of
distinct values?
...more
Scott Hernandez <scotthe...@gmail.com> Feb 11 09:30AM -0500
You use $group. Are you just trying to get the number or the list of
distinct values?
...more
You use $group. Are you just trying to get the number or the list of
distinct values?
...more
songhe yang <songh...@gmail.com> Feb 11 09:48PM -0800
I want to get the list of distinct values.
One more question:
Why not provide the distinct operator in pipeline operator?
...more
I want to get the list of distinct values.
One more question:
Why not provide the distinct operator in pipeline operator?
...more
Scott Hernandez <scotthe...@gmail.com> Feb 12 12:58AM -0500
It is easy to do like so:
db.runCommand({
"aggregate" : "people",
"pipeline" : [
{
"$group" : {
"_id" : "$name"
}
}]})
This creates a unique list of the name field.
...more
It is easy to do like so:
db.runCommand({
"aggregate" : "people",
"pipeline" : [
{
"$group" : {
"_id" : "$name"
}
}]})
This creates a unique list of the name field.
...more
songhe yang <songh...@gmail.com> Feb 11 09:46PM -0800
I use the pipeline $out operator, got the following error message.
{ ok: 0,
errmsg: 'Pipeline::run(): unrecognized pipeline op "$out' }
Any problem about my use method ?
...more
I use the pipeline $out operator, got the following error message.
{ ok: 0,
errmsg: 'Pipeline::run(): unrecognized pipeline op "$out' }
Any problem about my use method ?
...more
Scott Hernandez <scotthe...@gmail.com> Feb 12 12:49AM -0500
This is not supported yet. You can track and vote here:
https://jira.mongodb.org/browse/SERVER-3253
...more
This is not supported yet. You can track and vote here:
https://jira.mongodb.org/browse/SERVER-3253
...more
Eliot Horowitz <el...@10gen.com> Feb 12 12:39AM -0500
what is b?
are those 3 independent mongod nodes or is it a replica set?
...more
what is b?
are those 3 independent mongod nodes or is it a replica set?
...more
Eliot Horowitz <el...@10gen.com> Feb 11 10:29PM -0500
This has ok and valid as true.
Seems ok?
...more
This has ok and valid as true.
Seems ok?
...more
Eliot Horowitz <el...@10gen.com> Feb 11 10:27PM -0500
Can you check the indexes on all shards?
...more
Can you check the indexes on all shards?
...more
Scott Hernandez <scotthe...@gmail.com> Feb 11 09:32AM -0500
As others have said it depends on the language and parser/decoder
implementations used. It also depends what you are encoding/decoding
to and from -- some languages are much heavier than others when ...more
As others have said it depends on the language and parser/decoder
implementations used. It also depends what you are encoding/decoding
to and from -- some languages are much heavier than others when ...more
Marvin K <marvi...@gmail.com> Feb 11 01:00PM -0800
Scott, yes, I was considering using BSON independent of the database.
I am going to be logging some stuff and thought about logging them as:
1) JSON objects appended to a text file, one per line ...more
Scott, yes, I was considering using BSON independent of the database.
I am going to be logging some stuff and thought about logging them as:
1) JSON objects appended to a text file, one per line ...more
Eliot Horowitz <el...@10gen.com> Feb 11 10:17PM -0500
mongodump/restore just store raw bson in files.
one document after another.
since a document tells you how large it is, easy to read a file iteratively.
...more
mongodump/restore just store raw bson in files.
one document after another.
since a document tells you how large it is, easy to read a file iteratively.
...more
Wes Freeman <freem...@gmail.com> Feb 11 09:04PM -0500
I tested this myself, and was able to create a 17GB index (from a 300M
record collection) with 4GB of RAM available in about 30 minutes. It
does open a lot of files--mongo crashed the first try ...more
I tested this myself, and was able to create a 17GB index (from a 300M
record collection) with 4GB of RAM available in about 30 minutes. It
does open a lot of files--mongo crashed the first try ...more
Eliot Horowitz <el...@10gen.com> Feb 11 10:13PM -0500
Sharding shouldn't bean issue at all.
There were issues with older versions of mongod using more ram than it
should for creating indexes, but in 2.0 should be good.
...more
Sharding shouldn't bean issue at all.
There were issues with older versions of mongod using more ram than it
should for creating indexes, but in 2.0 should be good.
...more
Eliot Horowitz <el...@10gen.com> Feb 11 10:12PM -0500
If you replicate indexes would have to be done again.
Can this be done semi offline?
If so, you can build each one on a different machine in a different db name.
Then shut all mongod down, ...more
If you replicate indexes would have to be done again.
Can this be done semi offline?
If so, you can build each one on a different machine in a different db name.
Then shut all mongod down, ...more
Joe Esposito <j...@j-espo.com> Feb 11 05:56PM -0500
I truncated iostat due to pastie.org 64kbit limit, but I think this is a
representative sample..
mongostat: http://pastie.org/3363694
iostat: http://pastie.org/3363691
Sure doesn't look disk ...more
I truncated iostat due to pastie.org 64kbit limit, but I think this is a
representative sample..
mongostat: http://pastie.org/3363694
iostat: http://pastie.org/3363691
Sure doesn't look disk ...more
Eliot Horowitz <el...@10gen.com> Feb 11 09:11PM -0500
Regular server logs are also very helpful in these situations.
Are there any slow operations?
You might want to enable profiling for a bit as well.
...more
Regular server logs are also very helpful in these situations.
Are there any slow operations?
You might want to enable profiling for a bit as well.
...more
Steven Eksteen <ste...@secondimpression.net> Feb 12 12:19AM +0200
Ahh…. I just figured out now why that method didn't work for me last time
Using this example:
If a new session is started this would come in:
{ _id: "1", user_id: "xxx", session_id: "1234", ...more
Ahh…. I just figured out now why that method didn't work for me last time
Using this example:
If a new session is started this would come in:
{ _id: "1", user_id: "xxx", session_id: "1234", ...more
Barrie <bar...@10gen.com> Feb 11 03:46PM -0800
I definitely see how that won't work past the first three records in
your collection. To correct for that, you can add another field to
each record, let's call it session_total, and let that value ...more
I definitely see how that won't work past the first three records in
your collection. To correct for that, you can add another field to
each record, let's call it session_total, and let that value ...more
Randy Merrill <zora...@gmail.com> Feb 11 08:10AM -0800
I ran the query on a collection with 48698 documents and it took 355 ms.
...more
I ran the query on a collection with 48698 documents and it took 355 ms.
...more
Sam Millman <sam.m...@gmail.com> Feb 11 04:15PM
That is considerably slow but as Scott says the aggregation framework still
has a lot needing doing in terms of performance and whats out atm is really
designed to be a taster.
...more
That is considerably slow but as Scott says the aggregation framework still
has a lot needing doing in terms of performance and whats out atm is really
designed to be a taster.
...more
Randy Merrill <zora...@gmail.com> Feb 11 08:32AM -0800
It is slower than 'desired', but for my use case right now it works great.
Until it is actually released I am not going to worry too much about the
performance testing.
I am sure it will get ...more
It is slower than 'desired', but for my use case right now it works great.
Until it is actually released I am not going to worry too much about the
performance testing.
I am sure it will get ...more
Nicolas Grilly <nic...@gardentechno.com> Feb 11 05:13PM +0100
Thanks for your answer Scott. I'll redo my tests in a few weeks with the
next release.
...more
Thanks for your answer Scott. I'll redo my tests in a few weeks with the
next release.
...more
Scott Hernandez <scotthe...@gmail.com> Feb 11 11:25AM -0500
The first official release will be the 2.2.0 (stable) release.
Currently this is a developer preview or unstable development release
depending on who you.
Here is a little background on ...more
The first official release will be the 2.2.0 (stable) release.
Currently this is a developer preview or unstable development release
depending on who you.
Here is a little background on ...more
Robert Stam <rob...@10gen.com> Feb 11 10:41AM -0500
A field can be set to any value you want, so an array is just a value like
any other. If you have a tags variable of type BsonArray you can replace
the entire tags array like this:
...more
A field can be set to any value you want, so an array is just a value like
any other. If you have a tags variable of type BsonArray you can replace
the entire tags array like this:
...more
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Scott Hernandez
Feb 12, 2012, 10:50:00 AM2/12/12
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