difference between safe and sync options in PHP Driver

Default options are not taken into account for the required options

Hi,

I have written couchdb-clucene
(http://github.com/normanb/couchdb-clucene) and am doing a lot of
testing with heavy datasets where I am sending a bulk doc request with
10 docs at a time, a couple of these every second for a couple of
minutes.

Very quickly couchdb backs up and hogs the cpu since the database
commit and return doesn't wait for an external handler to do its job.
The model of fire and forget is fine and I like it, very similar to
JMS, however since the external process is a singleton it has to be
very quick to keep up with load or the system slowly backs up.

Is there a way to either define a pool of externals, or to change the
default behaviour from fire and forget?

thanks,

Norman

Hi,

We have an application that uses Cassandra to store data. The application
is
deployed on multiple nodes that are part of an application cluster. We are
at present using single Cassandra node. We have noticed few errors in
application and our analysis revealed that the root cause was that the
clock
on different application nodes was off by few miliseconds (approx 3.5 ms).

AFAIK all the application nodes using Cassandra should have clock synched.
Is this understanding correct? If yes, what is the recommended way to keep
the clocks in sync? Even if we use NTP the clocks go out of sync after few
hours. Should we write a cron job to sync time every N minutes or hours?
What is the recommendation in production? How are other Cassandra users
handling the clock sync in production environment?


Thanks,
Naren

     [
https://issues.apache.org/jira/browse...nels:all-tabpanel
]

Chris Douglas resolved MAPREDUCE-1937.

Updates:
	Status: Fixed

Comment #2 on issue 173 by antirez: Slave not detecting lost connection  
during sync
http://code.google.com/p/redis/issues/detail?id=173

Fixed, thank you and sorry for the delay.

Cheers,
Salvatore

Netty - @deprecated sync option and let it use the MEP to decide if its
InOnly or InOut

     [
https://issues.apache.org/jira/browse...nels:all-tabpanel
]

David Savage closed FELIX-2160.

Updates:
	Status: Verified

Comment #4 on issue 97 by antirez: Ubuntu 9.10 /etc/init.d/redis-server  
[stop|restart] does not force a sync to disk
http://code.google.com/p/redis/issues/detail?id=97

this is now fixed (as Chris suggested)

Basically, there's a few places where CouchDB will give you "id" and "rev"
instead of "_id" and "_rev". You will have to special-case those.

Also, this question should be on the use### @couchdb.apache.org mailing list.
You can subscribe to that from the couchdb website.

Wout.

On Jun 23, 2010, at 9:32 , adyut wrote:

 Hi everybody,
 
 any guidance for this from anybody!!!!
 
 
 Thanks
 Adyut
 
 On Jun 21, 3:19 pm, adyut <adyu### @gmail.com> wrote:
> Hi all,
> 
> I am very new to the CouchDB and really liked the idea. While I
was
> trying to use it I found this, when I fire an URL (RESTUrl) to
create
> a doc --
> URL :: PUT      http://127.0.0.1:5984/my_first_db/four
> 
> OUTPUT ::
>
{"ok":true,"id":"four","rev":"1-967a00dff5e02add41819138abb3284d"}
> 
> it's created successfully then I tried to access it
> URL :: GET      http://127.0.0.1:5984/my_first_db/four
> 
> OUTPUT ::
{"_id":"four","_rev":"1-967a00dff5e02add41819138abb3284d"}
> 
> I got the data.... and problem is, please notice the keys in
output in
> both cases. In first keys "id" and "rev " are without underscore
> "_",and while accessing they came with an underscore. In my
project I
> am using a global variable initialized with say"_rev" and using
it
> everywhere in project. This is an issue for me because I have
> requirement where first I am checking whether doc is exist or not
if
> not create one and use it. Now I have two options
> 1)creating to 2 global variables ....... OR
> 2)Fire GET immediately after PUT....
> 
> Is there any other better way to handle the situation... If the
> question is already answered please give me the pointer to the
answer.
> 
> Thanks in advance
> Adyut

  If I run in the disconnected mode using 'puppet' or 'puppet apply', is 
it possible to still have reports and facts synced to a central server? 
I've tried and it doesn't appear to be so, but I thought I would ask to 
make sure.

Marc Zampetti

Hi Folks

We need to find the performance difference between two Java builds in very
deep granular level (up to methods). Can you guys please let me know how
Jmeter can help in this case? (If Jmeter is not capable enough, would you
guys recommend any other tool?) 

(Ex: 
If there is a runtime difference like, 

running time of MyClass.method() in buildX = 1.2 sec 
running time of MyClass.method() in buildY = 1.3 sec

then, this should be highlighted in a report.
) 
 
Regards
Mani




      

Iam new to ibatis
Can anyone tell me wat is the difference between ibatis and myibatis?

Thanks.

Regards
Senthil Kumar Sekar

Let's say I have some embedded documents, `my_integers`, and I want to
calculate and display the difference between them


{ "_id" : ObjectId("4c5a86fcf277f91f88000026"), "created_at" : "Thu
Aug 05 2010 02:40:12 GMT-0700 (PDT)",  "my_integers" : [
	{
		"_id" : ObjectId("4c5a86fcf277f91f88000024"),
		"value": "1"
	},
	{
		"_id" : ObjectId("4c5a86fcf277f91f88000025"),
		"value" : 5
	},
	{
		"_id" : ObjectId("4c5a86fcf277f91f88000026"),
		"value" : 10
	}
]  }

So the output should be
[-4, 5] because -4 is the difference between the first and second, and
4 is the difference the second and third.

Any easy way to do this?

Hi, I have tried to generate java classes with two different ways:

- from a schema xsd with JAXB2.1 and run XJC and generate java classes.
- from a wsdl file (with a schema import) and i generate java classes with
wsdl2java command using CXF.


The problem is about a java class where there is a difference: The
difference is the content attribute and its getter and setter which is
missing with the wsdl2java command method whereas with the jaxb method it
is
present.

//
// This file was generated by the JavaTM Architecture for XML
Binding(JAXB)
Reference Implementation, v2.1-b02-fcs 
// See  http://java.sun.com/xml/jaxb http://java.sun.com/xml/jaxb  
// Any modifications to this file will be lost upon recompilation of the
source schema. 
//


import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlSeeAlso;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.XmlValue;



@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "BIN", **propOrder = {
    "content"**
})
@XmlSeeAlso({
    ED.class
})
public abstract class BIN {

    **@XmlValue
    protected String content;**
    @XmlAttribute
    protected BinaryDataEncoding representation;

    /**


    public String getContent() {
        return content;
    }

    /**
     * 
     *             Binary data is a raw block of bits. Binary data is a
     *             protected type that MUST not be used outside the data
     *             type specification.
     *          
     * 
     * @param value
     *     allowed object is
     *     {@link String }
     *     
     */
    **public void setContent(String value) {
        this.content = value;
    }**

    /**
     * Gets the value of the representation property.
     * 
     * @return
     *     possible object is
     *     {@link BinaryDataEncoding }
     *     
     */
    public BinaryDataEncoding getRepresentation() {
        if (representation == null) {
            return BinaryDataEncoding.TXT;
        } else {
            return representation;
        }
    }

    /**
     * Sets the value of the representation property.
     * 
     * @param value
     *     allowed object is
     *     {@link BinaryDataEncoding }
     *     
     */
    public void setRepresentation(BinaryDataEncoding value) {
        this.representation = value;
    }

}


I need this attribute into this class with wsdl2java method.


This is my wsdl2java command:

call wsdl2java -Debug -verbose -exsh true  -autoNameResolution -p
%PACKAGE_BASE%.pa -p "urn:hl7-org:v3"=%PACKAGE_BASE%.patient.hl -d
%PROJECT_HOME%\src\main\java\  %WSDL_HOME%\Test.wsdl


thank you very much

Team, I recently noticed a problem perhaps related to Tom's[1] regarding
the
schemaLocation value in a JAXB binding file[2].  CXF enumerates schemas
using Schema Component Descriptors (SCD's) within a WSDL differently from
Metro, resulting in JAXB binding files being incompatible between the two:

mybindingfile.xjb:
   <!--CXF -->
   <jaxb:bindings schemaLocation="ShoppingService.wsdl#types1"
node="/xs:schema"> 
   <!--Metro -->
   <jaxb:bindings schemaLocation="ShoppingService.wsdl#types?schema1"
node="/xs:schema">

Where 1,2,3 in both cases refers to the 1-based count of the xsd:schema
within the single wsdl:type.    The XJC compiler during the wsdl2java
generation process will reject the former for Metro and the latter for
CXF.

I'd like this to be standardized so the binding files would be portable
between the two frameworks but I'm not sure which framework is correct.
The
CXF method of incrementing the number next to the types seems inaccurate
because there can be only one wsdl:types.  On the other hand, Metro's
usage
of the ? as a delimiter does not appear to be defined in the SCD candidate
recommendation (http://www.w3.org/TR/xmlschema-ref/#section-scd-syntax).  

Granted, the CXF dev list might not be the most unbiased of forums, but
any
idea which team is "wrong"?

Thanks,
Glen

[1]
http://cxf.547215.n5.nabble.com/Inval...395.html#a1046395
[2]
http://www.jroller.com/gmazza/entry/c...facts#BindingFile
[3] http://www.w3.org/TR/xmlschema-ref/#section-scd-syntax

I'm using mybatis 3.0.1, PostgreSQL 8.4 and have some trouble
understanding the difference between 'id' and 'result' elements. take
a look at this mapping:

    <select id="getTestStories" resultMap="rmTestStory">
        SELECT story_id, author, vote_type_id, vote_count FROM (
        VALUES
            (1, 'author1', 2, 1),
            (1, 'author1', 3, 2),
            (1, 'author1', 4, 4),
            (2, 'author2', 1, 1),
            (2, 'author2', 3, 2),
            (2, 'author2', 4, 2)
        ) AS Votes (story_id, author, vote_type_id, vote_count)
        ORDER BY 1 ASC
    </select>

    <resultMap id="rmTestStory" type="TestStory">
        <id property="id" column="story_id"/>
        <result property="author" column="author"/>
        <collection property="voteCounts" ofType="VoteCount"
javaType="ArrayList">
            <result property="voteTypeId" column="vote_type_id"/>
            <result property="count" column="vote_count"/>
        </collection>
    </resultMap>

the important part is <result property="voteTypeId"
column="vote_type_id"/>. if it is set as an 'id' element, I get funny
results - for story with story_id = 2 and vote_type_id = 4 the
vote_count is 4 which is obviously wrong. on the other hand the
results are correct if I set the same mapping as 'result' element.

Thanks you for your answer Eliot. After a lot of try and error i
finally find the issue.
You're right with the timeout. I just reduced the batch size in my
query : "DBCursor cur = this.mongoDBCollectionProducts.find(new
BasicDBObject("is_active", true)).batchSize(100);" and now everything
is working fine.
I belive the cursor connection get a timeout between two calls.
What is really stange is that i did not get any exception to warn me
about the expiration of the cursor...
An hint i'm going to keep in mind for all my db projects. really
touchy...

Thank you for your help

On 3 août, 18:10, Eliot Horowitz <eliotho### @gmail.com> wrote:
 Mongo cursors timeout after 10 minutes.
 So if the downloading is slow you'l see that.

 What version are you using?  You should be getting a cursor timed
out exception

 On Tue, Aug 3, 2010 at 12:07 PM, sebastien <seb.### @gmail.com>
wrote:
 > Hello,

 > Im a using the java driver for mongo-db and each night, i need
to
 > iterate through all the items of my collection (aprox. 10000
items) to
 > make some special process (image caching).
 > My code is very simple :

 > DBCursor cur = this.mongoDBCollectionProducts.find(new
 > BasicDBObject("is_active", true));
 > System.out.println("NB items: "+cur.count());
 > int processed_items = 0;
 > while (cur.hasNext())
 > {
 >     DBObject obj = cur.next();
 >       // My custom process on the object.
 >      //...
 >    processed_items ++;
 > }
 > System.out.println("Processed items : "+processed_items
 > +" ("+cur.count()+")");

 > The problem is that the cusor did not iterate through all the
items of
 > my data set... The "hasNext()" method is returning false, but
all the
 > objects have not been processed.
 > The outpout is like :
 > NB items : 9799
 > Processed items : 1575 (9799)

 > No exception thrown, nothing else on the output.
 > I tried to "force" the cusor to go through the all the items by
 > replacing the "while" with a "for (int i=0; i<cur.count();
i++)" and i
 > get an error "Exception in thread "Thread-0"
 > java.lang.RuntimeException: no more
 >        at
com.mongodb.DBApiLayer$Result.next(DBApiLayer.java:347)
 > ...
 > "

 > As a second test, i just removed the part of my process witch is
a bit
 > "long" : downloading an image from a website, croping it and
storing
 > it back to a cache server and ... miracle ! the cursor iterate
through
 > all the data set...
 > I precise, the commented process has nothing to do with
mongo-db. it's
 > just slowing down the process between two iterations.

 > I am really despaired, does anybody already has such a problem
or has
 > an idea for me ?

 > Best regards,

 > --
 > 

Need to clarify the difference between null handling in JOIN and COGROUP

Can an AOF file be backed up with a simple 'cp' command? Or must we
create a dump file to do a backup?

Thanks,
David

On Jul 27, 3:39 pm, Salvatore Sanfilippo <ant### @gmail.com> wrote:
 On Tue, Jul 27, 2010 at 9:31 AM, teleo <lev.### @gmail.com>
wrote:
 > What is the safest way to backup an RDB file in Redis?

 In Redis .rdb files can be copied while the server is running without
 any need of lock. No corruption is possible since the new file is
 always saved in a temp location and atomically rename(2)d to the new
 location.

 So just use "cp" :)

 Cheers,
 Salvatore

 > Thanks,
 > T

 > --
 > 

     [
https://issues.apache.org/jira/browse...nels:all-tabpanel
]

Knut Anders Hatlen reassigned DERBY-3856: