I'm using hbase java api version 1.1.2 and also server version 1.1.2 .I'm firing table.get(List<Get>) where the list contains 60,000 Get operations[list size=60000].When i did bench marking it is taking 6 sec to fetch all the 60000 records from bucket cache .Any one knows the reason why this bulk get is slow in fetching these records from cache. (my each record size is 48 bytes) below are my region server settings: 1)hbase region server heap=30GB 2)Block cache size=40% of total heap=12GB 3)Bucket cache size=10GB[off heap-ioengine] 4)Memstore flush size=150mb 5)Memstore size=40 % of total heap=12GB 6)Max HFile size=1GB 7number of hfiles for compaction =10 8)number of handler threads=35 below are some other details 1)Total load 300 million 2)Number of regions:10 3)Number of Hfiles :15 4)Total size of HFiles : 4.72GB below is the table description COLUMN FAMILIES DESCRIPTION {NAME => 'CF1', BLOOMFILTER => 'ROW', VERSIONS => '1', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'FAST_DIF F', TTL => '3024000 SECONDS (35 DAYS)', COMPRESSION => 'GZ', MIN_VERSIONS => '0', BLOCKCACHE => 'true', BLOCKSIZE => '65536', REPLICATION_SC OPE => '0'} below are my bench marking details Records Time in millis 1 1 10 1 100 5 1000 44 10000 300 60000 8148 Thanks, Mani ... View more