# Reading Multiblock VTK file which inclueds named blocks, gets broken dataset.

**URL:** https://discourse.paraview.org/t/reading-multiblock-vtk-file-which-inclueds-named-blocks-gets-broken-dataset/10125
**Category:** ParaView Support
**Created:** [August 9, 2022, 5:33pm UTC](https://discourse.paraview.org/t/reading-multiblock-vtk-file-which-inclueds-named-blocks-gets-broken-dataset/10125 "2022-08-09T17:33:50Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![earth2001y](https://discourse.paraview.org/user_avatar/discourse.paraview.org/earth2001y/32/8370_2.png) [@earth2001y](https://discourse.paraview.org/u/earth2001y)
#### Post date: [August 9, 2022, 5:33pm UTC](https://discourse.paraview.org/t/reading-multiblock-vtk-file-which-inclueds-named-blocks-gets-broken-dataset/10125/1 "2022-08-09T17:33:50Z")

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Hello.  
I have lots multiblock dataset files and tried visualize those dataset with ParaView 5.10.1.  
And I’ve met a problem.

Dataset readed from Multiblock VTK file which includes named blocks, will be broken on parallel pvserver of ParaView 5.10.x .

1. Run pvserver in parallel.

```auto
$ mpirun -n 2 pvserver

```

2. Connect paraview to pvserver.
3. Read test.vtm. (unzip attached testing file [test.zip](https://discourse.paraview.org/uploads/short-url/z0foiD3DOYAvsSxhbYNfvryGSyu.zip) (17.2 KB))

test.vtm has 5 blocks.  
In 2 pvserver processes case, first 3 blocks was succeeded to read and last 2 blocks was failed.  
It seems reading is succeeded only blocks mapped on head process (rank 0).

Have I mistake to build paraview?  
However, prebuilded binary distributed from [paraview.org](http://paraview.org) has this problem, too.  
And ParaView 5.9.1 or older can read normally.

regards,

---

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### Author: ![jfausty](https://discourse.paraview.org/user_avatar/discourse.paraview.org/jfausty/32/9405_2.png) [@jfausty](https://discourse.paraview.org/u/jfausty)
#### Post date: [August 9, 2022, 6:13pm UTC](https://discourse.paraview.org/t/reading-multiblock-vtk-file-which-inclueds-named-blocks-gets-broken-dataset/10125/2 "2022-08-09T18:13:11Z")

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Hi @earth2001y,

This was a known issue [https://gitlab.kitware.com/paraview/paraview/-/issues/21419](https://gitlab.kitware.com/paraview/paraview/-/issues/21419) which is currently being fixed in VTK/ParaView.

Best regards,

Julien

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<div class="post-metadata">

### Author: ![earth2001y](https://discourse.paraview.org/user_avatar/discourse.paraview.org/earth2001y/32/8370_2.png) [@earth2001y](https://discourse.paraview.org/u/earth2001y)
#### Post date: [August 10, 2022, 12:35am UTC](https://discourse.paraview.org/t/reading-multiblock-vtk-file-which-inclueds-named-blocks-gets-broken-dataset/10125/3 "2022-08-10T00:35:11Z")

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Hi @jfausty ,

Thank you for your information about issue.  
I expect to the issue will be fixed early.

thanks,

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<div class="post-metadata">

### Author: ![jfausty](https://discourse.paraview.org/user_avatar/discourse.paraview.org/jfausty/32/9405_2.png) [@jfausty](https://discourse.paraview.org/u/jfausty)
#### Post date: [August 12, 2022, 8:05am UTC](https://discourse.paraview.org/t/reading-multiblock-vtk-file-which-inclueds-named-blocks-gets-broken-dataset/10125/4 "2022-08-12T08:05:06Z")

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Hi @earth2001y,

The issue should now be fixed in the ParaView master branch.

Kind regards,

Julien