Can we set up alerts for yarn application based resource utilization/memory utilization (example when an application take 200 vcores/memory usage greater than 1 TB? ... View more

We are seeing lot of no route to host in datanode logs and impala queries are also failing due to this. We are seeing this within the nodes and between nodes also. Issue is happening with multiple nodes. Host inspector are running with no issues.   We did lot of checks with OS and network team we couldn't find any. Any help on this.   1004:DataXceiver error processing WRITE_BLOCK operation src: /192.168.225.165:55010 dst: /192.168.225.165:1004 java.net.NoRouteToHostException: No route to host   1004:DataXceiver error processing WRITE_BLOCK operation src: /192.168.225.68:35322 dst: /192.168.225.68:1004 java.net.NoRouteToHostException: No route to host   1004:DataXceiver error processing WRITE_BLOCK operation src: /192.168.225.171:40718 dst: /192.168.225.165:1004 java.net.NoRouteToHostException: No route to host     ... View more

Hi,   1) If we create a table (both hive and impala)and just specify stored as parquet . Will that be snappy compressed by default in CDH?   2) If not how do i identify a parquet table with snappy compression and parquet table without snappy compression?.   Also how to specify snappy compression for table level  whiel creating and also at global level, even if nobody specified at table level (all table stored as parquet should be snappy compressed).   Please help   ... View more