Re: SpiQuery fails with exception

[vkulichenko]

Hi Kamil,

Is it reproduced each time you run the query or only under the load? Is it
possible for you to share the code with us, so that we can investigate?

-Val



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Re: Ignite Topic Based Messaging

[vkulichenko]

Hi,

Can you please properly subscribe to the mailing list so that the community
receives email notifications? Her is the instruction:
http://apache-ignite-users.70518.x6.nabble.com/mailing_list/MailingListOptions.jtp?forum=1


hemanta wrote
> I have two machines with one configured as ignite server and other as
> client. Can I reply on Ignite Topic Based Messaging for sending messages
> from client to server? What would happen when server is down or restarting
> and client wants to send a message?
> 
> Are these topics durable? Will it store message till the time server comes
> up?

Messages are sent asynchronously, so there is no delivery guarantee. I think
you should take a look at Compute Grid [1], which supports failover between
nodes. Can you please check if it can help with your use case?

[1] https://apacheignite.readme.io/docs/compute-grid

-Val



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SpiQuery fails with exception

[knowak]

Hi,
 
We’ve setup custom IndexSpi but when trying to run SpiQuery exception below
shows up. Is there anything we’re missing?
Worth adding that after excluding this validation for SPI queries (at
GridCacheQueryManager.java:663) all seem to be working as expected. Ignite
version - 1.5.0.final.
 

class org.apache.ignite.IgniteCheckedException: Received next page request
after iterator was removed. Consider increasing maximum number of stored
iterators (see GridCacheConfiguration.getMaximumQueryIteratorCount()
configuration property).
at
org.apache.ignite.internal.processors.cache.query.GridCacheQueryManager.executeFieldsQuery(GridCacheQueryManager.java:666)
at
org.apache.ignite.internal.processors.cache.query.GridCacheQueryManager.fieldsQueryResult(GridCacheQueryManager.java:1818)
at
org.apache.ignite.internal.processors.cache.query.GridCacheQueryManager.fieldsQueryResult(GridCacheQueryManager.java:1784)
at
org.apache.ignite.internal.processors.cache.query.GridCacheQueryManager.runFieldsQuery(GridCacheQueryManager.java:1194)
at
org.apache.ignite.internal.processors.cache.query.GridCacheDistributedQueryManager.processQueryRequest(GridCacheDistributedQueryManager.java:225)
at
org.apache.ignite.internal.processors.cache.query.GridCacheDistributedQueryManager$2.apply(GridCacheDistributedQueryManager.java:105)
at
org.apache.ignite.internal.processors.cache.query.GridCacheDistributedQueryManager$2.apply(GridCacheDistributedQueryManager.java:103)
at
org.apache.ignite.internal.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:582)
at
org.apache.ignite.internal.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:280)
(…)

 
Thanks,
Kamil



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Re: Is there a way to get original object reference from IgniteCache?

[vkulichenko]

Hi Jimmy,

Ignite stores data in serialized form, i.e. the object that you put is
serialized and saved as a byte array.  Having said that, you have to use
IgniteCache.put() to update the cache.

Note that you can always acquire Ignite instance using Ignition.ignite()
method. It's static, so you can do this anywhere in the code. Will this work
for you?

-Val



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Re: Node discovery

[babu prasad]

Sorry, my mistake. I realized it was a networking issue. Its fixed now.
What ports should I be whitelisting for the setup to work in a firewall?

On Mon, Mar 21, 2016 at 11:33 AM, babu prasad  wrote:

> Thank you!
> Here is the configuration.
> 
>
> 
>
> http://www.springframework.org/schema/beans";
>xmlns:util="http://www.springframework.org/schema/util";
>xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
>xsi:schemaLocation="
>http://www.springframework.org/schema/beans
>http://www.springframework.org/schema/beans/spring-beans.xsd
>http://www.springframework.org/schema/util
>http://www.springframework.org/schema/util/spring-util.xsd";>
> 
>class="org.apache.ignite.configuration.IgniteConfiguration">
> 
>   
> 
>   
>   
>   
>   
> 
>class="org.apache.ignite.cache.eviction.lru.LruEvictionPolicy">
> 
> 
>   
>   
> 
> 
> 
>  
> 
> 
> 
>   
>  class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
>   
> 
>   127.0.0.1:47500..47509
> 
> 
>   
>  
>   
> 
> 
> 
>  class="org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi">
>   
> 
>   
>   
>   
>
> On Mon, Mar 21, 2016 at 1:39 AM, Vladimir Ozerov 
> wrote:
>
>> Hi,
>>
>> Looks like a kind of misconfiguration or networking problem. Please
>> provide XML configuration you used to build the cluster.
>>
>> Vladimir.
>>
>> On Mon, Mar 21, 2016 at 10:29 AM, babu prasad  wrote:
>>
>>> Hi,
>>>
>>> I am trying to automate ignite cluster build.
>>> I am using apache-ignite-fabric-1.5.0.final-bin.zip.
>>> Looks like the nodes are starting up as individual nodes and not as part
>>> of the cluster.
>>>
>>> I tried using both the AWS configuration(using S3) and static IP and I
>>> am still running into the issue where the nodes are not discovered as part
>>> of the cluster.
>>>
>>> Could something be broken?
>>>
>>> Thanks!
>>>
>>> -Babu
>>>
>>
>>
>

Is there a way to get original object reference from IgniteCache?

[Zhao, Jimmy]

Is there a way to get original object reference rather than a copy from 
IgniteCache?

For example, we have a UserProfile object that contains User object and other 
properties, and will put this UserProfile object into Ignite cache. After 
getting User object in somewhere else, we will change name property 
User.setName(newValue) at runtime. However, if we do not get original reference 
of UserProfile from cache, the changed user name will not be reflected in the 
Ignite cache. We know we can use IgniteCache.put(key, UserProfile) again to 
have cache updated, but this step and the UserProfile object are not available 
in other classes.


Thanks

Jimmy Zhao
Applications Analyst Programmer Specialist
Technology Services Division
North Carolina Administrative Office of the Courts
704 765-1695  T

Providing services to help North Carolina's unified court system operate more 
efficiently and effectively, taking into account each courthouse's diverse 
needs, caseloads, and available resources.


E-mail correspondence to and from this address may be subject to the
North Carolina public records laws and if so, may be disclosed.

Re: Node discovery

[babu prasad]

Thank you!
Here is the configuration.




http://www.springframework.org/schema/beans";
   xmlns:util="http://www.springframework.org/schema/util";
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
   xsi:schemaLocation="
   http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd
   http://www.springframework.org/schema/util
   http://www.springframework.org/schema/util/spring-util.xsd";>

  

  

  
  
  
  

  


  
  



 



  

  

  127.0.0.1:47500..47509


  
 
  




  

  
  
  

On Mon, Mar 21, 2016 at 1:39 AM, Vladimir Ozerov 
wrote:

> Hi,
>
> Looks like a kind of misconfiguration or networking problem. Please
> provide XML configuration you used to build the cluster.
>
> Vladimir.
>
> On Mon, Mar 21, 2016 at 10:29 AM, babu prasad  wrote:
>
>> Hi,
>>
>> I am trying to automate ignite cluster build.
>> I am using apache-ignite-fabric-1.5.0.final-bin.zip.
>> Looks like the nodes are starting up as individual nodes and not as part
>> of the cluster.
>>
>> I tried using both the AWS configuration(using S3) and static IP and I am
>> still running into the issue where the nodes are not discovered as part of
>> the cluster.
>>
>> Could something be broken?
>>
>> Thanks!
>>
>> -Babu
>>
>
>

Re: Reading data using SQL queries

[Denis Magda]

Hi,

Ignite SQL queries work over the data located on-heap, off-heap or swap. If
a part of the data is completely removed from a cache due to an eviction
policy then SQL engine won't be able to read this missing data from an
underlying CacheStore. Read-through is supported only for get()/getAll()
like operations.

Actually you can enable the swap space [1] where the data will be evicted
and keep using SQL. Will this work for you?

As per the cache metrics what do you mean saying that they don't work for
the client. Please elaborate more on this.

Finally, please properly subscribe to the user list (this way we will not
have to manually approve your emails). All you need to do is send an email
to “ user-subscr...@ignite.apache.org” and follow simple instructions in the
reply.


[1] https://apacheignite.readme.io/docs/off-heap-memory#swap-space



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Re: How to solve the data lost?

[Denis Magda]

Hi,

What is the name of the cache where the data loss happens? It looks like
that you didn't set CacheConfiguration.backups for it.

>From your configuration I see that you set backups number to 10 for the
unnamed cache. However are you sure that you query data over this unnamed
cache?

Also why do you need to have such big number of backups? Is there any reason
for that?

--
Denis



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Re: Hibernate loadcache error?

[Denis Magda]

Ravi,

If you start a node using ignite.sh/ignite.bat provided with Ignite bundles
then perform the following steps:
- go to {ignite_bundle}/libs/optional folder;
- move ignite-hibernate directory from {ignite_bundle}/libs/optional to
{ignite_bundle}/libs folder
- start the node using ignite.sh/ignite.bat

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Re: Hibernate connection inspite of jdbc?

[Denis Magda]

Ravi,

Have you tried to launch CacheHibernateStoreExample that is delivered as a
part of Ignite bundles and can be located in
'examples\src\main\java-lgpl\..' directory?

Try to check everything directly from IDE (like IntellijIdea, Eclipse).
Start additional server nodes from IDE as well.

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Re: Two Ignite Clusters formed after network disturbance

[Denis Magda]

Hi,

This looks like a classical "split brain" scenario.

Ignite has built-in concept of a segmentation resolver [1] that allows work
out situations like you have.
But Ignite is lack of any implementation for this interface.

However, GridGain, that is built on top of Ignite, provides several
segmentation resolvers' implementations as a part of its enterprise features
set [2]

[1]
https://ignite.apache.org/releases/1.5.0.final/javadoc/org/apache/ignite/plugin/segmentation/package-frame.html
[2] https://gridgain.readme.io/docs/network-segmentation
 



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Re: JMS Data Streamer: Not writing to data to cache when message received by Streamer

[Denis Magda]

Raul,

/If I understand correctly, flushing controls when the changes in the 
streamer will be sent to the grid (can someone confirm?). /


Your understanding is correct. Autoflush allows to trigger data flushing 
to the grid periodically.
If autoflush is disabled then the data is sent either when 
IgniteDataStreamer. perNodeBufferSize is reached or flush()/close() is 
called manually.


--
Denis

On 3/20/2016 1:12 PM, Raul Kripalani wrote:


Auto flush / flushing is a characteristic of all streamers, that's why 
you won't find it explained explicitly in the docs of specific 
streamers, but in the general streamer one.


If I understand correctly, flushing controls when the changes in the 
streamer will be sent to the grid (can someone confirm?).


Autoflush is disabled by default, i.e. meaning that you must call 
flush() manually on the streamer for the writes to be visible in the 
cache.


To avoid that, and if your use case permits it, autoflush will flush 
the buffered entries periodically.


When in doubt, you can check the unit tests for the component you're 
working with.


Cheers,
Raúl.

On 20 Mar 2016 02:02, "techbysample" > wrote:


That worked.  Thank you very much.

Would you please elaborate on how property is used?
Does it imply that by default autoflushFrequency is disabled and
DataStreamer will NOT
write data to cache unless explicitly set?

I basically modeled my JMSStreamer after the following
documentation here:
https://apacheignite.readme.io/docs/jms-data-streamer
The docs do not explicitly mention setting 'autoflushFrequency'..


Here is definition from Apache Ignite docs: -
dataStreamer.autoFlushFrequency:


"Sets automatic flush frequency. Essentially, this is the time
after which
the streamer will make an attempt to submit all data added so far
to remote
nodes. Note that there is no guarantee that data will be delivered
after
this concrete attempt (e.g., it can fail when topology is
changing), but it
won't be lost anyway.

If set to 0, automatic flush is disabled.

Automatic flush is disabled by default (default value is 0)."


Please advise.

Thank you






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Re: Hibernate connection inspite of jdbc?

[Ravi Puri]

i tried adding hibernate jars and its related jars also.. but it stil shows
the  same error...? any other way to do it through hibernate?



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Re: Node discovery

[Vladimir Ozerov]

Hi,

Looks like a kind of misconfiguration or networking problem. Please provide
XML configuration you used to build the cluster.

Vladimir.

On Mon, Mar 21, 2016 at 10:29 AM, babu prasad  wrote:

> Hi,
>
> I am trying to automate ignite cluster build.
> I am using apache-ignite-fabric-1.5.0.final-bin.zip.
> Looks like the nodes are starting up as individual nodes and not as part
> of the cluster.
>
> I tried using both the AWS configuration(using S3) and static IP and I am
> still running into the issue where the nodes are not discovered as part of
> the cluster.
>
> Could something be broken?
>
> Thanks!
>
> -Babu
>

Re: Nodes not rebalancing evenly

[Vladimir Ozerov]

Hi,

Yes, normally we epxect data to be evenly distributed between nodes. There
could be variety of reasons for bad balance:
1) May be you have custom affinity configuration (e.g. *@AffinityKeyMapped*)
annotation).
2) May be you load data from store what also may lead to this.

Could you please provide the whole Ignite configuration as well as source
code of your keys?

Also please explain how do you measure keys distribution. Do you use
*org.apache.ignite.cache.affinity.Affinity* interface or something else?

Vladimir.

On Sat, Mar 19, 2016 at 8:12 PM, kberthelot  wrote:

> I've created a partitioned cache with the following configuration:
>
> cacheConfiguration.setCacheMode(CacheMode.PARTITIONED);
> cacheConfiguration.setName(CACHE_NAME);
> cacheConfiguration.setRebalanceMode(CacheRebalanceMode.SYNC);
>
> When I bring up a new node some of the keys get "rebalanced" to the new
> node, but the nodes do not end up balanced evenly (the new node often ends
> up with only one or very few entries). Should the default behavior be that
> the entries are evenly sharded across all nodes, or is there a setting that
> forces this behavior? I would expect all the nodes to have close to the
> same
> number of entries after rebalancing.
>
>
>
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>

Re: question about how to monitor ignite

[Vasiliy Sisko]

Hello. 

To connect to grid from Visor console you should use xml configuration with
same discovery as you specified in java code that you are running from IDE.

You can use multicast as most simple discovery and use "default.xml" in
Visor console.



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question about how to monitor ignite

[minisoft_rm]

I am using ignite to "select" lots of DB records into cache.
after that, I want to follow the "To start Console Management & Monitoring
run ignitevisorcmd.{sh|bat}".

however, not get correct idea how to use it. the reason is that I ran ignite
test from eclipse... and not xml Configuration File. so what should I do:
[
visor> open
Local configuration files:
++
| #  |Configuration File

|
++
| 0  | config/default-config.xml

|
| 1  | (?) config/router/default-router.xml 

|
| 2  | examples/config/example-cache.xml

|
| 3  | examples/config/example-default.xml  

|

++

Choose configuration file number ('c' to cancel) [0]: c
]

besides, not sure if GridGain provide web style monitoring tool like web
console? thanks~



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Node discovery

[babu prasad]

Hi,

I am trying to automate ignite cluster build.
I am using apache-ignite-fabric-1.5.0.final-bin.zip.
Looks like the nodes are starting up as individual nodes and not as part of
the cluster.

I tried using both the AWS configuration(using S3) and static IP and I am
still running into the issue where the nodes are not discovered as part of
the cluster.

Could something be broken?

Thanks!

-Babu

Re: Hibernate loadcache error?

[Ravi Puri]

how to enable ignite hibernate module? 



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