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Home » Eclipse Projects » Memory Analyzer » Query: Group By Value shows no values
Query: Group By Value shows no values [message #1821283] Mon, 10 February 2020 11:19 Go to next message
Stefan Mueller is currently offline Stefan MuellerFriend
Messages: 1
Registered: February 2020
Junior Member
I followed a short tutorial to find duplicate String. I open Java Basics -> Group By Value and insert "java.lang.String".

The result is only a single line:

String Value| Objects | Shallow Heap | Avg. Retained Size | Retained Heap
-----------------------------------------------------------------------------
| 6.682.585 | 106.921.360 | 61 | >= 411.154.232
-----------------------------------------------------------------------------

I expected the top 20 values to be shown. Does it mean I do not have any duplicate values in more than 6.5 million Strings?
Re: Query: Group By Value shows no values [message #1821649 is a reply to message #1821283] Tue, 18 February 2020 08:06 Go to previous message
Andrew Johnson is currently offline Andrew JohnsonFriend
Messages: 205
Registered: July 2009
Senior Member
That line appears to show that you have 6682585 strings with no value, and that you have no other sorts of string.

Is this an IBM Portable Heap Dump (PHD) file? These do not contain primitive field or primitive array contents, so no no string values can be shown.

If it is a different heap dump then please let us know the JVM version which generated the dump and show the inspector view when selecting a String object so we can see the field values.
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