[jira] [Created] (IMPALA-12084) INVALIDATE METADATA under unloaded db hit DCHECK in LocalCatalog mode

["Quanlong Huang (Jira)" <ji...@apache.org>]

Quanlong Huang created IMPALA-12084:
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             Summary: INVALIDATE METADATA under unloaded db hit DCHECK in LocalCatalog mode
                 Key: IMPALA-12084
                 URL: https://issues.apache.org/jira/browse/IMPALA-12084
             Project: IMPALA
          Issue Type: Bug
          Components: Catalog
            Reporter: Quanlong Huang
            Assignee: Quanlong Huang


When running in LocalCatalog mode, INVALIDATE METADATA under unloaded db will hit the following DCHECK:
{code}
F0423 17:12:50.566385  7565 catalog-op-executor.cc:88] 9c4c9d5f5d7974bc:b97e6dae00000000] Check failed: !obj.db.__isset.metastore_db Minimal database TCatalogObject should have empty metastore_db
*** Check failure stack trace: *** 
    @          0x37ce3ed  google::LogMessage::Fail()
    @          0x37d0324  google::LogMessage::SendToLog()
    @          0x37cddcc  google::LogMessage::Flush()
    @          0x37d0849  google::LogMessageFatal::~LogMessageFatal()
    @          0x195389d  VerifyMinimalResponse()
    @          0x195809c  impala::CatalogOpExecutor::Exec()
    @          0x16ce391  impala::ClientRequestState::ExecDdlRequestImpl()
    @          0x16d713c  boost::detail::function::void_function_obj_invoker0<>::invoke()
    @          0x18cdb52  impala::Thread::SuperviseThread()
    @          0x18ce95b  boost::detail::thread_data<>::run()
    @          0x23cd927  thread_proxy
    @     0x7f196963f6db  start_thread
    @     0x7f19663b761f  clone{code}

This is a bug introduced by IMPALA-9936 in which we added the DCHECK. This use case is still sending back the full DB object to the coordinator.

For reproducing the issue:
{code:sql}
# Start Impala cluster with --hms_event_polling_interval_s=0
bin/start-impala-cluster.py --catalogd_args="--catalog_topic_mode=minimal --hms_event_polling_interval_s=0" --impalad_args=--use_local_catalog

# Create new db and new table in Hive
beeline -u "jdbc:hive2://localhost:11050"
> create database mydb;
> create table mydb.mytbl (i int);

# Run IM in Impala
impala-shell.sh
> invalidate metadata mydb.mytbl;
# The coordinator will crash at hitting the DCHECK
{code}



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