This file is indexed.

/usr/lib/mysql-testsuite/std_data/loaddata3.dat is in percona-server-test-5.6 5.6.22-rel71.0-0ubuntu4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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number     row data
1          row 1     
2          row 2     
error      12345678901234567890123456789012345678901234567890
3          row 3     
wrong end  12345678901234567890123456789012345678901234567890