今天impala集群在执行：invalidate metadata;时，报ERROR: Couldn't open transport for host.impala:26000(connect() failed: Connection refused)
经过分析后，发现主节点的catalog服务已经停了，没启动，
service impala-catalog status
Impala Catalog Server is dead and pid file exists [FAILED]
通过service impala-catalog start 重新启动服务后，
再执行invalidate metadata;则正常工作，特此记录一下。
service impala-state-store status 用于查看state-store状态
ERROR: Couldn't open transport for host.impala:26000(connect() failed: Connectio
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转载自daizj.iteye.com/blog/2372175
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周排行