HBase Tables

Click HBase --> Tables in the side navigation bar to view all the HBase tables in a cluster. The Tables page is displayed.

note

The statistics displayed are from the last 24 hours by default. To view statistics from a custom date range, click the Time frame icon in the top-right corner of the page and select the required time frame and timezone.

The following table describes the table properties.

Column NameDescription
Table NameThe name of the table.
Size on DiskThe size of the table on the disk.
Store File SizeThe size of storefiles in the table.
# of Store FileThe number of store files.
Mem Store SizeThe memStore is where the data is stored before being written on the actual disk. MemStoreSize is the size of the memStore.
Read Request CountThe number of read request counts.
Write Request CountThe number of write request counts.
# of RegionsThe number of regions in the table.
Online RegionsThe number of regions in online state.
Offline RegionsThe number of regions in offline state.
Failed RegionsThe number of regions in failed state.
Split RegionsThe number of regions in split state.

HBase Table Details

Summary panel

The following table describes the selected table metrics in the summary panel.

MetricDescription
Store File SizeSize of files stored on the disk.
Num Store FilesNumber of store files.
Read/WriteThe number of read and write requests.
EnabledTrue or False based on whether the table was enabled or not.
CompactionSpecifies if the table was in compaction.
Num RegionsThe number of regions in the table.
OnlineThe number of regions in online state.
OfflineThe number of regions in offline state.
FailedThe number of regions in failed state.
SplitThe number of regions in split state.
OtherThe number of any other existing regions.

Table Description

An entire description of the table is displayed in the Table Description tile.

Click the clip-board icon to copy the table description.

Region Size For Table

Region size for table displays a bar chart describing the region size per host in the table. Hover over each bar in the chart to view the region Id and region size.

Region Hotspots

In Hbase, hotspotting occurs when a Region Server receives most or all of the read and write requests.

You can view hotspotting based on the following:

  1. readRequestCount: Number of read requests.
  2. writeRequestCount: Number of write requests.
  3. storeFileSize: Total size of storefiles.
  4. memStoreSize: MemStore is where the data is stored before being written on the actual disk. MemStoreSize is the size of the memStore.

Region Details

The following table describes the region metrics.

MetricsDescription
Region NameName of the region.
Start KeyStart Key value for storing records in the region.
End KeyEnd Key value for storing records in the region.
Read RequestNumber of read requests sent to the region.
Write RequestNumber of write requests sent to the region.
LocalityPercentage of data locality in the region.

To view the store files of the region, click the down arrow key. The following table describes the details of the store files for every region.

MetricDescription
File PathPath where the files are stored.
File SizeSize of the file.
HostName of the host or region server.
Modification TimeDate and time when the store file was last modified.

Compaction

Compaction in HBase is used to manage small files that were created from large files like in TB. Major compaction is used for multiple files into one file and minor compaction is used for two files into one.

The following table describes the compaction details for the selected table.

MetricDescription
RegionRegion ID.
Region ServerHost or ID of the region server.
Num. Compacting KV'sNumber of key values in compacting state.
Num. Compacted KV'sNumber of key values that have finished compacting.
Compaction ProgressPercentage of the compaction progress.