Aleksandr created HBASE-24613:
---------------------------------

             Summary: Doesn't work SplitPolicy attributs for table
                 Key: HBASE-24613
                 URL: https://issues.apache.org/jira/browse/HBASE-24613
             Project: HBase
          Issue Type: Bug
          Components: Region Assignment
    Affects Versions: 1.4.8
            Reporter: Aleksandr
         Attachments: image-2020-06-22-18-04-27-155.png

Doesn't work SplitPolicy settings at the table level. Regions are splits to 
very low size.

Table describe: 

 
{code:java}
test_split, {TABLE_ATTRIBUTES => {MAX_FILESIZE => '2147483648', METADATA => 
{'SPLIT_POLICY' => 
'org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy'}} COLUMN 
FAMILIES DESCRIPTION {NAME => 'data', BLOOMFILTER => 'ROW', VERSIONS => '1', 
IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 
'NONE', TTL => 'FOREVER', COMPRESSION => 'NONE', MIN_VERSIONS => '0', 
BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SCOPE => '0'} {NAME => 
'number', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', 
KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', 
COMPRESSION => 'NONE', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => 
'65536', REPLICATION_SCOPE => '0'} {NAME => 'uuid', BLOOMFILTER => 'ROW', 
VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', 
DATA_BLOCK_ENCODING => 'NONE', TTL => 'FOREVER', COMPRESSION => 'NONE', 
MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', 
REPLICATION_SCOPE => '0'}{code}
 

Global settings that affect split:
 * Maximum Region File Size - 10GB
 * Memstore Flush Size - 128MB
 * hbase.regionserver.region.split.policy - 
org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy 

As a result, regions are splits to  400-600MB, but we expecting should region 
size 2GB. 

!image-2020-06-22-18-04-27-155.png!

Why it happens? This is a bug?

 



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