log4j:WARN No appenders could be found for logger (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x0000000000a18b12, pid=4063, tid=140344869222144
#
# JRE version: 6.0_35-b10
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.10-b01 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C  [impalad+0x618b12]  impala::AggregationNode::Prepare(impala::RuntimeState*)+0x782
#
# An error report file with more information is saved as:
# /home/impala/hs_err_pid4063.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#