[HBASE-25368] Filter out more invalid encoded name in isEncodedRegionName(byte[] regionName)

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1
• Component/s: Client
• Assignee: Huaxiang Sun
• Reporter: Huaxiang Sun
• Created: 07/Dec/20 20:04
• Updated: 27/Mar/22 11:20
• Resolved: 20/Jan/21 18:55

Description

public static boolean isEncodedRegionName(byte[] regionName) {
  // If not parseable as region name, presume encoded. TODO: add stringency; e.g. if hex.
  return parseRegionNameOrReturnNull(regionName) == null && regionName.length <= MD5_HEX_LENGTH;
}

Right now, if it passes in an table name, it still thinks  it is a encoded region name and will result in unnecessary registry query for meta regions. This can be avoided if table names can be filtered out early in this method.

Issue Links

• links to: GitHub Pull Request #2753
• links to: GitHub Pull Request #2868