@stigahuang wrote: Looks like there're no places to control the max JVM heap size of impalads in Cloudera Manager. (Only one for the catalogd) How can we set JAVA_TOOL_OPTIONS for impalads (coordinators)?   In CM 7.6.7, there is a configuration option called "impalad_embedded_jvm_heapsize". Not sure when it was added. impalad_embedded_jvm_heapsize: Maximum size in bytes for the Java Process heap memory. Passed to Java -Xmx. ... View more

I encountered this kind of issues before. It helps if you can paste your JDBC URL string.   Do you run in a secured cluster? If not, you could try using AuthMech=3 and UseSasl=0 together. ... View more