It is expected when firstly query tables after establishing the connection. Something likes loads some meta information into local cache that need take some time, mainly including two aspects: 1. access SYSTEM.CATALOG table to get schema information of the table 2. access the meta table of HBase to get regions information of the table
---------------------------------------- Jaanai Zhang Best regards! William Shen <wills...@marinsoftware.com> 于2019年1月31日周四 下午1:37写道： > Hi there, > > I have a component that makes Phoenix queries via the Phoenix JDBC > Connection. I noticed that consistently, the Phoenix Client takes longer to > execute a PreparedStatement and it takes longer to read through the > ResultSet for a period of time (~15m) after a restart of the component. It > seems like there is a warmup period for the JDBC connection. Is this to be > expected? > > Thanks! >
