exception in thread "main" java.lang.OutOfMemoryError: Java heap space

[SMahadevan1608028474]

Even after adding JVM parameter still am getting this error.

[Prakhar1]

did you add

-XX:-UseGCOverheadLimit

[SMahadevan1608028474]

Yes, I have added already in Jvm arguments -XX:-UseGCOverheadLimit

[David_Beaty]

Sounds like you have components in use that are holding all the data rows in memory whilst it's running. Look for things like:

• tUniqRow
• tSortRow
• tMap
• tAggregate

Ensure you've enabled the use of disk to perform actions on.

[SMahadevan1608028474]

Thanks for your reply on this. Here I am using only Tmap and SchemaComplianceCheck components. Therefore If I want to enable to use disk space... where in Talend? if it is my system I have enough space in my disk.

[David_Beaty]

Hi,

In the tMap component, if you select it only (don't double click) there's a field in the Basic settings as to the path to the "Temp data directory path". You use put in a context variable here to dynamically adjust where the files go or just put a fixed path.

Thanks

David.

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[SMahadevan1608028474]

I have set the path in Temp Data directory path for tMap component.The files are getting generated in specified path even though am getting the error once the job complete. (Ref: Heap Memory.jpg)

[David_Beaty]

Hi,

I would suggest you use something like Java Visual VM and monitor the job when its running and see at what point it starts to eat all the memory.

Thanks

David

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[SMahadevan1608028474]

Is It right path to download https://visualvm.github.io/download.html

[David_Beaty]

Hi

It should be part of your Java, if you've got the JDK installed, under the {java JDK home}/bin folder - jvisualvm.exe

Thanks

David

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