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Logs from Java threads running in ExecutorService are missing the query id which is stored in the C++ thread-local ThreadDebugInfo variable. This patch adds JNI calls for Java threads to manage the ThreadDebugInfo variable. Currently two thread pools are changed: - MissingTable loading pool in StmtMetadataLoader.parallelTableLoad(). - Table loading pool in TableLoadingMgr. MissingTable loading pool only lives within the parallelTableLoad() method. So we initialize ThreadDebugInfo with the queryId at the beginning of the thread and delete it at the end of the thread. Note that a thread might be reused to load different tables, but they all belong to the same query. Table loading pool is a long running pool in catalogd that never shut down. Threads in it is used to load tables triggered by different queries. We initialize ThreadDebugInfo as the above but update it when the thread starts loading table for a different query id, and reset it when the loading is done. The query id is passed down from the catalogd RPC request headers. Tests: - Added e2e test to verify the logs. - Ran existing CORE tests. Change-Id: I83cca55edc72de35f5e8c5422efc104e6aa894c1 Reviewed-on: http://gerrit.cloudera.org:8080/23558 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>