[HDFS-14912] Set dfs.image.string-tables.expanded default to false in branch-2.7

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.8
• Fix Version/s: 2.7.8
• Target Version/s: 2.7.8
• Assignee: Siyao Meng
• Reporter: Siyao Meng
• Created: 17/Oct/19 22:09
• Updated: 28/Oct/19 18:37
• Resolved: 28/Oct/19 18:37

Description

In the branch-2.7 patch for CVE-2018-11768 HDFS FSImage Corruption, dfs.image.string-tables.expanded is set to true by default: https://github.com/apache/hadoop/commit/109d44604ca843212bdf22b50e86a5a41e1d21da#diff-36b19e9d8816002ed9dff8580055d3fbR627

This is different from all other branches, which set it to false by default.
For instance, branch-2.8: https://github.com/apache/hadoop/commit/f697f3c4fc0067bb82494e445900d86942685b09#diff-36b19e9d8816002ed9dff8580055d3fbR629

Goal: Flip the dfs.image.string-tables.expanded default in branch-2.7 to false to make it consistent with other branches.