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https://issues.apache.org/jira/browse/IMPALA-7441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-7441:
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Priority: Minor (was: Major)
> Java logging happens before Java logging is configured, leading to INFOs
> printed at ERROR
> -----------------------------------------------------------------------------------------
>
> Key: IMPALA-7441
> URL: https://issues.apache.org/jira/browse/IMPALA-7441
> Project: IMPALA
> Issue Type: Task
> Components: Frontend
> Reporter: Philip Martin
> Priority: Minor
> Labels: newbie, ramp-up
>
> The following is pretty surprising:
> {code}
> catalogd.....impala.log.ERROR.20180813-040536.9529:18/08/13 04:05:37 INFO
> util.JvmPauseMonitor: Starting JVM pause monitor
> {code}
> Namely, we've got an INFO-level log message appearing in the ERROR file.
> What's going on (I think) is that {{GlogAppender.Install()}} is being called
> during the constructors of Frontend and Catalog objects:
> {code}
> $git grep GlogAppender.Install
> fe/src/main/java/org/apache/impala/service/JniCatalog.java:
> GlogAppender.Install(TLogLevel.values()[cfg.impala_log_lvl],
> fe/src/main/java/org/apache/impala/service/JniFrontend.java:
> GlogAppender.Install(TLogLevel.values()[cfg.impala_log_lvl],
> {code}
> Meanwhile, the pause monitor is initialized earlier:
> {code}
> $git grep -C5 JniUtil::InitJvmPauseMonitor | head
> be/src/common/init.cc- if (!fs_cache_init_status.ok())
> CLEAN_EXIT_WITH_ERROR(fs_cache_init_status.GetDetail());
> be/src/common/init.cc-
> be/src/common/init.cc- if (init_jvm) {
> be/src/common/init.cc- ABORT_IF_ERROR(JniUtil::Init());
> be/src/common/init.cc- InitJvmLoggingSupport();
> be/src/common/init.cc: ABORT_IF_ERROR(JniUtil::InitJvmPauseMonitor());
> be/src/common/init.cc- ZipUtil::InitJvm();
> be/src/common/init.cc- }
> {code}
> This is largely cosmetic, but it was surprising to me.
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