[ 
https://issues.apache.org/jira/browse/IGNITE-12543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

LEE PYUNG BEOM updated IGNITE-12543:
------------------------------------
    Description: 
When using Java Thin Client with Ignite 2.6,

When I put data in the form List<List<SomeObject>>, 

the size of the original 200KB data was increased to 50MB when inquired by 
Ignite servers.

On the Heap Dump, the list element was repeatedly accumulated, increasing the 
data size.

 

When I checked 
main.java.org.apacheignite.internal.binary.BinaryWriterExImpl.java 
doWriteBinaryObject method,


{code:java}
// main.java.org.apacheignite.internal.binary.BinaryWriterExImpl.java

    public void doWriteBinaryObject(@Nullable BinaryObjectImpl po) {
        if (po == null)
            out.writeByte(GridBinaryMarshaller.NULL);
        else {
            byte[] poArr = po.array();
            out.unsafeEnsure(1 + 4 + poArr.length +4);
            out.unsafeWriteByte(GridBinaryMarshaller.BINARY_OBJ);
            out.unsafeWriteInt(poArr.length);
            out.writeByteArray(poArr);
            out.unsafeWriteInt(po.start());
        }
    }
{code}


The size of the inside list is increasing by repeating the number of inner 
lists, which can lead to memory errors depending on the capacity of the object 
and the number of lists.

 

 

 

  was:
When using Java Thin Client with Ignite 2.6,

When I put data in the form List<List<SomeObject>>, 

the size of the original 200KB data was increased to 50MB when inquired by 
Ignite servers.

On the Heap Dump, the list element was repeatedly accumulated, increasing the 
data size.

Under network monitoring, normal size was measured during transmission from the 
client to the server.



Do you have a history of reported issues?


> When put List<List<SomeObject>>, the data was increased much larger.
> --------------------------------------------------------------------
>
>                 Key: IGNITE-12543
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12543
>             Project: Ignite
>          Issue Type: Bug
>          Components: thin client
>    Affects Versions: 2.6
>            Reporter: LEE PYUNG BEOM
>            Priority: Major
>
> When using Java Thin Client with Ignite 2.6,
> When I put data in the form List<List<SomeObject>>, 
> the size of the original 200KB data was increased to 50MB when inquired by 
> Ignite servers.
> On the Heap Dump, the list element was repeatedly accumulated, increasing the 
> data size.
>  
> When I checked 
> main.java.org.apacheignite.internal.binary.BinaryWriterExImpl.java 
> doWriteBinaryObject method,
> {code:java}
> // main.java.org.apacheignite.internal.binary.BinaryWriterExImpl.java
>     public void doWriteBinaryObject(@Nullable BinaryObjectImpl po) {
>         if (po == null)
>             out.writeByte(GridBinaryMarshaller.NULL);
>         else {
>             byte[] poArr = po.array();
>             out.unsafeEnsure(1 + 4 + poArr.length +4);
>             out.unsafeWriteByte(GridBinaryMarshaller.BINARY_OBJ);
>             out.unsafeWriteInt(poArr.length);
>             out.writeByteArray(poArr);
>             out.unsafeWriteInt(po.start());
>         }
>     }
> {code}
> The size of the inside list is increasing by repeating the number of inner 
> lists, which can lead to memory errors depending on the capacity of the 
> object and the number of lists.
>  
>  
>  



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