Matthew Mulder created IMPALA-5605:
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Summary: configuration to prevent crashes caused by thread
resource limits
Key: IMPALA-5605
URL: https://issues.apache.org/jira/browse/IMPALA-5605
Project: IMPALA
Issue Type: Documentation
Components: Docs
Affects Versions: Impala 2.9.0
Reporter: Matthew Mulder
Assignee: John Russell
Fix For: Impala 2.9.0
Depending on the workload, Impala may need to create a very large number of
threads. If so, it is necessary to configure the system correctly to prevent
Impala from crashing because of resource limitations. Such a crash would look
like this:{code}F0629 08:20:02.956413 29088 llvm-codegen.cc:111] LLVM hit fatal
error: Unable to allocate section memory!
terminate called after throwing an instance of
'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::thread_resource_error>
>'{code}To prevent this, each Impala host should be configured like
this:{code}echo 2000000 > /proc/sys/kernel/threads-max
echo 2000000 > /proc/sys/kernel/pid_max
echo 8000000 > /proc/sys/vm/max_map_count{code}In /etc/security/limits.conf
add{code}impala soft nproc 262144
impala hard nproc 262144{code}
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