[IMPALA-5411] Excessive logging while queries are loading metadata from ImpalaServer::GetRuntimeProfileStr

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 2.9.0
• Fix Version/s: Impala 2.9.0
• Component/s: Backend
• Labels: bugbash-2017-05-31
• Epic Color: ghx-label-3
• Assignee: Bharath Vissapragada
• Reporter: Mostafa Mokhtar
• Created: 31/May/17 23:33
• Updated: 22/Jun/17 17:37
• Resolved: 01/Jun/17 22:18

Description

Excessive logging to impalad.INFO while queries are loading metadata from ImpalaServer::GetRuntimeProfileStr

Status ImpalaServer::GetRuntimeProfileStr(const TUniqueId& query_id,
    bool base64_encoded, stringstream* output) {
  DCHECK(output != nullptr);
  // Search for the query id in the active query map
  {
    shared_ptr<ClientRequestState> request_state = GetClientRequestState(query_id);
    if (request_state.get() != nullptr) {
      // For queries in CREATED state, the profile information isn't populated yet.
      if (request_state->query_state() == beeswax::QueryState::CREATED) {
        return Status("Query plan is not ready.");
      }
      lock_guard<mutex> l(*request_state->lock());
      if (base64_encoded) {
        request_state->profile().SerializeToArchiveString(output);
      } else {
        request_state->profile().PrettyPrint(output);
      }
      return Status::OK();
    }
  }

I0531 14:11:29.161602 107591 Frontend.java:929] Compiled query.
I0531 14:11:29.871356 190031 status.cc:122] Query plan is not ready.
    @           0x83c119  impala::Status::Status()
    @           0xab871c  impala::ImpalaServer::GetRuntimeProfileStr()
    @           0xae781c  impala::ImpalaHttpHandler::QueryProfileEncodedHandler()
    @           0xbf445a  impala::Webserver::RenderUrlWithTemplate()
    @           0xbf59a7  impala::Webserver::BeginRequestCallback()
    @           0xc08bb0  (unknown)
    @           0xc0b32d  (unknown)
    @           0xc0b9bd  (unknown)
    @       0x37dd207aa1  (unknown)
    @       0x37dcee893d  (unknown)

Issue Links

• is broken by: IMPALA-1972 Queries that take a long time to plan can cause webserver to block other queries