[HBASE-13331] Exceptions from DFS client can cause CatalogJanitor to delete referenced files

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.0.0, 0.98.12
• Fix Version/s: 1.0.1, 1.1.0, 0.98.12, 2.0.0
• Component/s: master
• Hadoop Flags: Reviewed
• Release Note: Fixes an issue where files from a split region that were still referenced were erroneously deleted leading to data loss.
• Assignee: Elliott Neil Clark
• Reporter: Elliott Neil Clark
• Created: 24/Mar/15 20:14
• Updated: 30/Aug/16 04:19
• Resolved: 25/Mar/15 03:01

Description

CatalogJanitor#checkDaughterInFs assumes that there are no references whenever HRegionFileSystem.openRegionFromFileSystem throws IOException. Well Hadoop and HBase throw IOExceptions whenever someone looks in their general direction.

Issue Links

• relates to: HBASE-16527 IOExceptions from DFS client still can cause CatalogJanitor to delete referenced files