了解HBase扫描指标

时间:2018-02-28 16:46:18

标签: java performance hadoop hbase

我试图了解HBase ScanMetrics的一些指标的含义

Scan metrics: {count of regions: 1, remote rpc calls: 15, remote rpc retries: 0, Sum of Milli seconds between nexts: 8380}

我已将行的客户端缓存设置为10000,因此每次调用next都会给我这么多行。我正在进行的扫描查询总共获取了13000行。下面列出了我对扫描度量输出的理解和问题

count of regions: 1
All rows were found in 1 region. Correct me if i am wrong.
remote rpc calls: 15

Don't understand why this is 15. What all does this include
other than actual calls to the region server to fetch rows.
Sum of Milli seconds between nexts: 8380

Does this include time taken for any intermediate
processing between successive calls to next?

0 个答案:

没有答案