Change requirement to have zlib in PATH to have zlib installed.
<title>gp_workfile_compress_algorithm</title>
<body>
<p>When a hash aggregation or hash join operation spills to disk during query processing,
- specifies the compression algorithm to use on the spill files. If using zlib, it must be in
- your $PATH on all segments.</p>
- <p>If your Greenplum database installation uses serial ATA (SATA) disk drives, setting the
+ specifies the compression algorithm to use on the spill files. If using zlib, the zlib
+ library must be installed on all hosts in the Greenplum Database cluster. </p>
+ <p>If your Greenplum Database installation uses serial ATA (SATA) disk drives, setting the
value of this parameter to <codeph>zlib</codeph> might help to avoid overloading the disk
subsystem with IO operations.</p>
<table id="gp_workfile_compress_algorithm_table">
