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Last updated: Sep 23, 2026 15:15 UTC

reportMissingRegionsInMeta (Hbck2)

Reports regions that exist as directories in HDFS but are missing from hbase:meta. This command is check-only and performs no repairs. The hbase:meta table must be online to run this command.

Command Syntax

hbase hbck -j <path-to-hbck2-jar> reportMissingRegionsInMeta [<NAMESPACE | NAMESPACE:TABLENAME>... | -i <INPUT_FILE>...]

Options

-i, --inputFiles <file1> [<file2>...] Specifies one or more files containing namespaces or table names, one per line.

Description

This command compares:

  • Regions listed in hbase:meta, and
  • Region directories present in HDFS

For each specified namespace or table, it identifies region directories on HDFS that do not have a corresponding entry in hbase:meta. These are reported as missing regions and are grouped by table.

If a table has no missing regions, the command prints a “no missing regions” message.

You may specify:

  • One or more table names,
  • One or more namespaces, or
  • Any combination of both

If no arguments are provided, the command checks all regions across the cluster.

Info

When specifying table names, always include the namespace (for example, default:my_table). Table names without namespaces may be misinterpreted as namespaces.

To repair missing regions by adding them back into hbase:meta, use the addFsRegionsMissingInMeta command.

Examples

  • Report missing regions for table_1 and table_2 in the default namespace:
hbase hbck -j <path-to-hbck2-jar> reportMissingRegionsInMeta default:table_1 default:table_2
  • Report missing regions for table_1 in the default namespace and for all tables in the namespace ns1:
hbase hbck -j <path-to-hbck2-jar> reportMissingRegionsInMeta default:table_1 ns1
  • Report missing regions for tables listed in fileName1 and fileName2:
hbase hbck -j <path-to-hbck2-jar> reportMissingRegionsInMeta -i fileName1 fileName2