| --- | |
| layout: docs31 | |
| title: Update Coprocessor | |
| categories: howto | |
| permalink: /docs31/howto/howto_update_coprocessor.html | |
| --- | |
| Kylin leverages HBase coprocessor to optimize query performance. After new versions released, the RPC protocol may get changed, so user need to redeploy coprocessor to HTable. | |
| There's a CLI tool to update HBase Coprocessor: | |
| {% highlight Groff markup %} | |
| $KYLIN_HOME/bin/kylin.sh org.apache.kylin.storage.hbase.util.DeployCoprocessorCLI default all | |
| {% endhighlight %} |