add truncate for spark show()

[Nicole00]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Description:

How do you solve it?

to show the full data columns

Special notes for your reviewer, ex. impact of this fix, design document, etc:

[codecov-commenter]

Codecov Report

Base: 50.79% // Head: 50.79% // No change to project coverage 👍

Coverage data is based on head (7491326) compared to base (1000608).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff            @@
##             master      #75   +/-   ##
=========================================
  Coverage     50.79%   50.79%           
  Complexity      123      123           
=========================================
  Files            26       26           
  Lines          1453     1453           
  Branches        240      240           
=========================================
  Hits            738      738           
  Misses          638      638           
  Partials         77       77           

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