Matthew created HADOOP-12436: -------------------------------- Summary: GlobPattern regex library has performance issues with wildcard characters Key: HADOOP-12436 URL: https://issues.apache.org/jira/browse/HADOOP-12436 Project: Hadoop Common Issue Type: Improvement Components: fs Affects Versions: 2.7.1, 2.2.0 Reporter: Matthew Assignee: Matthew
java.util.regex classes have performance problems with certain wildcard patterns. Namely, consecutive * characters in a file name (not properly escaped as literals) will cause commands such as "hadoop fs -ls file******name" to consume 100% CPU and probably never return in a reasonable time (time scales with number of *'s). Here is an example: {noformat} hdfs dfs -ls '/tmp/job_1429571161900_4222-1430338332599-tda%2D%2D+******************************+++...%270%27%28Stage-1430338580443-39-2000-SUCCEEDED-production%2Dhigh-1430338340360.jhist' {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)