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Impala
Impalaistheopensource,nativeanalyticdatabaseforApacheHadoop.
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Impala
Impalaistheopensource,nativeanalyticdatabaseforApacheHadoop.
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Public Member Functions | |
| SessionState () | |
| void | ToThrift (const TUniqueId &session_id, TSessionState *session_state) |
Public Attributes | |
| TSessionType::type | session_type |
| TimestampValue | start_time |
| Time the session was created. More... | |
| std::string | connected_user |
| Connected user for this session, i.e. the user which originated this session. More... | |
| std::string | do_as_user |
| The user to delegate to. Empty for no delegation. More... | |
| TNetworkAddress | network_address |
| Client network address. More... | |
| boost::mutex | lock |
| bool | closed |
| If true, the session has been closed. More... | |
| bool | expired |
| std::string | database |
| The default database (changed as a result of 'use' query execution) More... | |
| TQueryOptions | default_query_options |
| The default query options of this session. More... | |
| apache::hive::service::cli::thrift::TProtocolVersion::type | hs2_version |
| For HS2 only, the protocol version this session is expecting. More... | |
| boost::unordered_set< TUniqueId > | inflight_queries |
| Inflight queries belonging to this session. More... | |
| int64_t | last_accessed_ms |
| Time the session was last accessed. More... | |
| uint32_t | ref_count |
Per-session state. This object is reference counted using shared_ptrs. There is one ref count in the SessionStateMap for as long as the session is active. All queries running from this session also have a reference.
Definition at line 776 of file impala-server.h.
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inline |
The default hs2_version must be V1 so that child queries (which use HS2, but may run as children of Beeswax sessions) get results back in the expected format - child queries inherit the HS2 version from their parents, and a Beeswax session will never update the HS2 version from the default.
Definition at line 781 of file impala-server.h.
| void impala::ImpalaServer::SessionState::ToThrift | ( | const TUniqueId & | session_id, |
| TSessionState * | session_state | ||
| ) |
Builds a Thrift representation of this SessionState for serialisation to the frontend.
Definition at line 1070 of file impala-server.cc.
References connected_user, database, do_as_user, lock, network_address, and session_type.
| bool impala::ImpalaServer::SessionState::closed |
If true, the session has been closed.
Definition at line 804 of file impala-server.h.
| std::string impala::ImpalaServer::SessionState::connected_user |
Connected user for this session, i.e. the user which originated this session.
Definition at line 791 of file impala-server.h.
Referenced by ToThrift().
| std::string impala::ImpalaServer::SessionState::database |
The default database (changed as a result of 'use' query execution)
Definition at line 813 of file impala-server.h.
Referenced by ToThrift().
| TQueryOptions impala::ImpalaServer::SessionState::default_query_options |
The default query options of this session.
Definition at line 816 of file impala-server.h.
| std::string impala::ImpalaServer::SessionState::do_as_user |
The user to delegate to. Empty for no delegation.
Definition at line 794 of file impala-server.h.
Referenced by ToThrift().
| bool impala::ImpalaServer::SessionState::expired |
If true, the session was idle for too long and has been expired. Only set when ref_count == 0, after which point ref_count should never become non-zero (since clients will use ScopedSessionState to access the session, which will prevent use after expiration).
Definition at line 810 of file impala-server.h.
| apache::hive::service::cli::thrift::TProtocolVersion::type impala::ImpalaServer::SessionState::hs2_version |
For HS2 only, the protocol version this session is expecting.
Definition at line 819 of file impala-server.h.
| boost::unordered_set<TUniqueId> impala::ImpalaServer::SessionState::inflight_queries |
Inflight queries belonging to this session.
Definition at line 822 of file impala-server.h.
| int64_t impala::ImpalaServer::SessionState::last_accessed_ms |
Time the session was last accessed.
Definition at line 825 of file impala-server.h.
| boost::mutex impala::ImpalaServer::SessionState::lock |
Protects all fields below If this lock has to be taken with query_exec_state_map_lock, take this lock first.
Definition at line 801 of file impala-server.h.
Referenced by ToThrift().
| TNetworkAddress impala::ImpalaServer::SessionState::network_address |
Client network address.
Definition at line 797 of file impala-server.h.
Referenced by impala::ImpalaServer::LogAuditRecord(), and ToThrift().
| uint32_t impala::ImpalaServer::SessionState::ref_count |
Number of RPCs concurrently accessing this session state. Used to detect when a session may be correctly expired after a timeout (when ref_count == 0). Typically at most one RPC will be issued against a session at a time, but clients may do something unexpected and, for example, poll in one thread and fetch in another.
Definition at line 831 of file impala-server.h.
| TSessionType::type impala::ImpalaServer::SessionState::session_type |
Definition at line 785 of file impala-server.h.
Referenced by ToThrift().
| TimestampValue impala::ImpalaServer::SessionState::start_time |
Time the session was created.
Definition at line 788 of file impala-server.h.
1.8.6 
