org.apache.zookeeper.server

Class ServerMetrics

java.lang.Object

org.apache.zookeeper.server.ServerMetrics

public final class ServerMetrics
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
SummarySet	ACK_LATENCY
Counter	ADD_DEAD_WATCHER_STALL_TIME
Summary	BATCH_SIZE
Counter	BYTES_RECEIVED_COUNT
Summary	CLOSE_SESSION_PREP_TIME
Counter	CNXN_CLOSED_WITHOUT_ZK_SERVER_RUNNING
Counter	COMMIT_COUNT
Summary	COMMIT_PROCESS_TIME
Summary	COMMIT_PROPAGATION_LATENCY
Counter	COMMITS_QUEUED
Summary	COMMITS_QUEUED_IN_COMMIT_PROCESSOR
Summary	CONCURRENT_REQUEST_PROCESSING_IN_COMMIT_PROCESSOR
Counter	CONNECTION_DROP_COUNT
Counter	CONNECTION_REJECTED
Counter	CONNECTION_REQUEST_COUNT
Counter	CONNECTION_REVALIDATE_COUNT
Summary	CONNECTION_TOKEN_DEFICIT
Summary	DB_INIT_TIME Db init time (snapshot loading + txnlog replay)
Summary	DEAD_WATCHERS_CLEANER_LATENCY
Counter	DEAD_WATCHERS_CLEARED
Counter	DEAD_WATCHERS_QUEUED
static ServerMetrics	DEFAULT_METRICS_FOR_TESTS Dummy instance useful for tests.
Counter	DIFF_COUNT
Counter	DIGEST_MISMATCHES_COUNT
Summary	ELECTION_TIME
Counter	ENSEMBLE_AUTH_FAIL
Counter	ENSEMBLE_AUTH_SKIP
Counter	ENSEMBLE_AUTH_SUCCESS
Summary	FOLLOWER_SYNC_TIME
Summary	FSYNC_TIME Txnlog fsync time
Summary	INFLIGHT_DIFF_COUNT
Summary	INFLIGHT_SNAP_COUNT
Counter	INSECURE_ADMIN
Summary	JVM_PAUSE_TIME
Counter	LARGE_REQUESTS_REJECTED
Summary	LEADER_UNAVAILABLE_TIME
Counter	LEARNER_COMMIT_RECEIVED_COUNT
SummarySet	LEARNER_HANDLER_QP_SIZE Learner handler quorum packet metrics.
SummarySet	LEARNER_HANDLER_QP_TIME
Counter	LEARNER_PROPOSAL_RECEIVED_COUNT
Summary	LEARNER_REQUEST_PROCESSOR_QUEUE_SIZE
Summary	LOCAL_WRITE_COMMITTED_TIME Time spent by a committed request, for a locally issued write, in the commit processor.
Counter	LOOKING_COUNT
Summary	NETTY_QUEUED_BUFFER
Summary	NODE_CHANGED_WATCHER
Summary	NODE_CHILDREN_WATCHER
Summary	NODE_CREATED_WATCHER Fired watcher stats.
Summary	NODE_DELETED_WATCHER
static ServerMetrics	NULL_METRICS Dummy instance useful for tests.
Summary	OM_COMMIT_PROCESS_TIME
Summary	OM_PROPOSAL_PROCESS_TIME Observer Master processing metrics.
Counter	OUTSTANDING_CHANGES_QUEUED
Counter	OUTSTANDING_CHANGES_REMOVED
Summary	PENDING_SESSION_QUEUE_SIZE
Summary	PREP_PROCESS_TIME
Summary	PREP_PROCESSOR_QUEUE_SIZE
Summary	PREP_PROCESSOR_QUEUE_TIME
Counter	PREP_PROCESSOR_QUEUED
Summary	PROPAGATION_LATENCY Stats for all quorum request.
Summary	PROPOSAL_ACK_CREATION_LATENCY
Counter	PROPOSAL_COUNT
Summary	PROPOSAL_LATENCY
Summary	PROPOSAL_PROCESS_TIME
Counter	QUIT_LEADING_DUE_TO_DISLOYAL_VOTER
Summary	QUORUM_ACK_LATENCY
Summary	READ_COMMITPROC_TIME Time spent by a read request in the commit processor.
Summary	READ_FINAL_PROC_TIME Time spent by the final processor.
Summary	READ_ISSUED_FROM_SESSION_QUEUE
Summary	READ_LATENCY Stats for read request.
SummarySet	READ_PER_NAMESPACE
Summary	READS_AFTER_WRITE_IN_SESSION_QUEUE
Summary	READS_ISSUED_IN_COMMIT_PROC
Summary	READS_QUEUED_IN_COMMIT_PROCESSOR
Summary	REQUEST_THROTTLE_QUEUE_TIME
Counter	REQUEST_THROTTLE_WAIT_COUNT
Summary	REQUESTS_IN_SESSION_QUEUE
Counter	REQUESTS_NOT_FORWARDED_TO_COMMIT_PROCESSOR
Counter	RESPONSE_BYTES Number of response/watch bytes written to clients.
Counter	RESPONSE_PACKET_CACHE_HITS
Counter	RESPONSE_PACKET_CACHE_MISSING
Counter	RESPONSE_PACKET_GET_CHILDREN_CACHE_HITS
Counter	RESPONSE_PACKET_GET_CHILDREN_CACHE_MISSING
Counter	REVALIDATE_COUNT
Summary	SERVER_WRITE_COMMITTED_TIME Time spent by a committed request for a write, issued by other server, in the commit processor.
Summary	SESSION_QUEUES_DRAINED
Counter	SESSIONLESS_CONNECTIONS_EXPIRED
Counter	SKIP_LEARNER_REQUEST_TO_NEXT_PROCESSOR_COUNT
Counter	SNAP_COUNT
Summary	SNAPSHOT_TIME Snapshot writing time
Summary	SOCKET_CLOSING_TIME
Counter	STALE_REPLIES
Counter	STALE_REQUESTS
Counter	STALE_REQUESTS_DROPPED
Counter	STALE_SESSIONS_EXPIRED
Summary	STARTUP_SNAP_LOAD_TIME
Summary	STARTUP_TXNS_LOAD_TIME
Summary	STARTUP_TXNS_LOADED
Summary	SYNC_PROCESS_TIME
Summary	SYNC_PROCESSOR_FLUSH_TIME
Summary	SYNC_PROCESSOR_QUEUE_AND_FLUSH_TIME
Summary	SYNC_PROCESSOR_QUEUE_SIZE
Summary	SYNC_PROCESSOR_QUEUE_TIME
Counter	SYNC_PROCESSOR_QUEUED
Counter	THROTTLED_OPS
Summary	TIME_WAITING_EMPTY_POOL_IN_COMMIT_PROCESSOR_READ
Counter	TLS_HANDSHAKE_EXCEEDED
Summary	UNAVAILABLE_TIME
Counter	UNRECOVERABLE_ERROR_COUNT
Counter	UNSUCCESSFUL_HANDSHAKE
Summary	UPDATE_LATENCY Stats for request that need quorum voting.
Counter	WATCH_BYTES
Summary	WRITE_BATCH_TIME_IN_COMMIT_PROCESSOR
Summary	WRITE_COMMITPROC_TIME Time spent by a write request in the commit processor.
Summary	WRITE_FINAL_PROC_TIME
SummarySet	WRITE_PER_NAMESPACE
Summary	WRITES_ISSUED_IN_COMMIT_PROC
Summary	WRITES_QUEUED_IN_COMMIT_PROCESSOR

Method Summary

Modifier and Type	Method and Description
static ServerMetrics	getMetrics() Access current ServerMetrics.
MetricsProvider	getMetricsProvider()
static void	metricsProviderInitialized(MetricsProvider metricsProvider)
void	resetAll()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NULL_METRICS

public static final ServerMetrics NULL_METRICS

Dummy instance useful for tests.

DEFAULT_METRICS_FOR_TESTS

public static final ServerMetrics DEFAULT_METRICS_FOR_TESTS

Dummy instance useful for tests.

FSYNC_TIME

public final Summary FSYNC_TIME

Txnlog fsync time

SNAPSHOT_TIME

public final Summary SNAPSHOT_TIME

Snapshot writing time

DB_INIT_TIME

public final Summary DB_INIT_TIME

Db init time (snapshot loading + txnlog replay)

READ_LATENCY

public final Summary READ_LATENCY

Stats for read request. The timing start from when the server see the request until it leave final request processor.

UPDATE_LATENCY

public final Summary UPDATE_LATENCY

Stats for request that need quorum voting. Timing is the same as read request. We only keep track of stats for request that originated from this machine only.

PROPAGATION_LATENCY

public final Summary PROPAGATION_LATENCY

Stats for all quorum request. The timing start from when the leader see the request until it reach the learner.

FOLLOWER_SYNC_TIME

public final Summary FOLLOWER_SYNC_TIME

ELECTION_TIME

public final Summary ELECTION_TIME

LOOKING_COUNT

public final Counter LOOKING_COUNT

DIFF_COUNT

public final Counter DIFF_COUNT

SNAP_COUNT

public final Counter SNAP_COUNT

COMMIT_COUNT

public final Counter COMMIT_COUNT

CONNECTION_REQUEST_COUNT

public final Counter CONNECTION_REQUEST_COUNT

REVALIDATE_COUNT

public final Counter REVALIDATE_COUNT

CONNECTION_DROP_COUNT

public final Counter CONNECTION_DROP_COUNT

CONNECTION_REVALIDATE_COUNT

public final Counter CONNECTION_REVALIDATE_COUNT

SESSIONLESS_CONNECTIONS_EXPIRED

public final Counter SESSIONLESS_CONNECTIONS_EXPIRED

STALE_SESSIONS_EXPIRED

public final Counter STALE_SESSIONS_EXPIRED

UNAVAILABLE_TIME

public final Summary UNAVAILABLE_TIME

LEADER_UNAVAILABLE_TIME

public final Summary LEADER_UNAVAILABLE_TIME

CONNECTION_TOKEN_DEFICIT

public final Summary CONNECTION_TOKEN_DEFICIT

CONNECTION_REJECTED

public final Counter CONNECTION_REJECTED

INFLIGHT_SNAP_COUNT

public final Summary INFLIGHT_SNAP_COUNT

INFLIGHT_DIFF_COUNT

public final Summary INFLIGHT_DIFF_COUNT

UNRECOVERABLE_ERROR_COUNT

public final Counter UNRECOVERABLE_ERROR_COUNT

WRITE_PER_NAMESPACE

public final SummarySet WRITE_PER_NAMESPACE

READ_PER_NAMESPACE

public final SummarySet READ_PER_NAMESPACE

BYTES_RECEIVED_COUNT

public final Counter BYTES_RECEIVED_COUNT

PREP_PROCESSOR_QUEUE_TIME

public final Summary PREP_PROCESSOR_QUEUE_TIME

PREP_PROCESSOR_QUEUE_SIZE

public final Summary PREP_PROCESSOR_QUEUE_SIZE

PREP_PROCESSOR_QUEUED

public final Counter PREP_PROCESSOR_QUEUED

OUTSTANDING_CHANGES_QUEUED

public final Counter OUTSTANDING_CHANGES_QUEUED

OUTSTANDING_CHANGES_REMOVED

public final Counter OUTSTANDING_CHANGES_REMOVED

PREP_PROCESS_TIME

public final Summary PREP_PROCESS_TIME

PROPOSAL_PROCESS_TIME

public final Summary PROPOSAL_PROCESS_TIME

CLOSE_SESSION_PREP_TIME

public final Summary CLOSE_SESSION_PREP_TIME

PROPOSAL_LATENCY

public final Summary PROPOSAL_LATENCY

PROPOSAL_ACK_CREATION_LATENCY

public final Summary PROPOSAL_ACK_CREATION_LATENCY

COMMIT_PROPAGATION_LATENCY

public final Summary COMMIT_PROPAGATION_LATENCY

LEARNER_PROPOSAL_RECEIVED_COUNT

public final Counter LEARNER_PROPOSAL_RECEIVED_COUNT

LEARNER_COMMIT_RECEIVED_COUNT

public final Counter LEARNER_COMMIT_RECEIVED_COUNT

STARTUP_TXNS_LOADED

public final Summary STARTUP_TXNS_LOADED

STARTUP_TXNS_LOAD_TIME

public final Summary STARTUP_TXNS_LOAD_TIME

STARTUP_SNAP_LOAD_TIME

public final Summary STARTUP_SNAP_LOAD_TIME

SYNC_PROCESSOR_QUEUE_AND_FLUSH_TIME

public final Summary SYNC_PROCESSOR_QUEUE_AND_FLUSH_TIME

SYNC_PROCESSOR_QUEUE_SIZE

public final Summary SYNC_PROCESSOR_QUEUE_SIZE

SYNC_PROCESSOR_QUEUED

public final Counter SYNC_PROCESSOR_QUEUED

SYNC_PROCESSOR_QUEUE_TIME

public final Summary SYNC_PROCESSOR_QUEUE_TIME

SYNC_PROCESSOR_FLUSH_TIME

public final Summary SYNC_PROCESSOR_FLUSH_TIME

SYNC_PROCESS_TIME

public final Summary SYNC_PROCESS_TIME

BATCH_SIZE

public final Summary BATCH_SIZE

QUORUM_ACK_LATENCY

public final Summary QUORUM_ACK_LATENCY

ACK_LATENCY

public final SummarySet ACK_LATENCY

PROPOSAL_COUNT

public final Counter PROPOSAL_COUNT

QUIT_LEADING_DUE_TO_DISLOYAL_VOTER

public final Counter QUIT_LEADING_DUE_TO_DISLOYAL_VOTER

NODE_CREATED_WATCHER

public final Summary NODE_CREATED_WATCHER

Fired watcher stats.

NODE_DELETED_WATCHER

public final Summary NODE_DELETED_WATCHER

NODE_CHANGED_WATCHER

public final Summary NODE_CHANGED_WATCHER

NODE_CHILDREN_WATCHER

public final Summary NODE_CHILDREN_WATCHER

ADD_DEAD_WATCHER_STALL_TIME

public final Counter ADD_DEAD_WATCHER_STALL_TIME

DEAD_WATCHERS_QUEUED

public final Counter DEAD_WATCHERS_QUEUED

DEAD_WATCHERS_CLEARED

public final Counter DEAD_WATCHERS_CLEARED

DEAD_WATCHERS_CLEANER_LATENCY

public final Summary DEAD_WATCHERS_CLEANER_LATENCY

RESPONSE_PACKET_CACHE_HITS

public final Counter RESPONSE_PACKET_CACHE_HITS

RESPONSE_PACKET_CACHE_MISSING

public final Counter RESPONSE_PACKET_CACHE_MISSING

RESPONSE_PACKET_GET_CHILDREN_CACHE_HITS

public final Counter RESPONSE_PACKET_GET_CHILDREN_CACHE_HITS

RESPONSE_PACKET_GET_CHILDREN_CACHE_MISSING

public final Counter RESPONSE_PACKET_GET_CHILDREN_CACHE_MISSING

LEARNER_HANDLER_QP_SIZE

public final SummarySet LEARNER_HANDLER_QP_SIZE

Learner handler quorum packet metrics.

LEARNER_HANDLER_QP_TIME

public final SummarySet LEARNER_HANDLER_QP_TIME

REQUESTS_IN_SESSION_QUEUE

public final Summary REQUESTS_IN_SESSION_QUEUE

PENDING_SESSION_QUEUE_SIZE

public final Summary PENDING_SESSION_QUEUE_SIZE

READS_AFTER_WRITE_IN_SESSION_QUEUE

public final Summary READS_AFTER_WRITE_IN_SESSION_QUEUE

READ_ISSUED_FROM_SESSION_QUEUE

public final Summary READ_ISSUED_FROM_SESSION_QUEUE

SESSION_QUEUES_DRAINED

public final Summary SESSION_QUEUES_DRAINED

TIME_WAITING_EMPTY_POOL_IN_COMMIT_PROCESSOR_READ

public final Summary TIME_WAITING_EMPTY_POOL_IN_COMMIT_PROCESSOR_READ

WRITE_BATCH_TIME_IN_COMMIT_PROCESSOR

public final Summary WRITE_BATCH_TIME_IN_COMMIT_PROCESSOR

CONCURRENT_REQUEST_PROCESSING_IN_COMMIT_PROCESSOR

public final Summary CONCURRENT_REQUEST_PROCESSING_IN_COMMIT_PROCESSOR

READS_QUEUED_IN_COMMIT_PROCESSOR

public final Summary READS_QUEUED_IN_COMMIT_PROCESSOR

WRITES_QUEUED_IN_COMMIT_PROCESSOR

public final Summary WRITES_QUEUED_IN_COMMIT_PROCESSOR

COMMITS_QUEUED_IN_COMMIT_PROCESSOR

public final Summary COMMITS_QUEUED_IN_COMMIT_PROCESSOR

COMMITS_QUEUED

public final Counter COMMITS_QUEUED

READS_ISSUED_IN_COMMIT_PROC

public final Summary READS_ISSUED_IN_COMMIT_PROC

WRITES_ISSUED_IN_COMMIT_PROC

public final Summary WRITES_ISSUED_IN_COMMIT_PROC

THROTTLED_OPS

public final Counter THROTTLED_OPS

READ_COMMITPROC_TIME

public final Summary READ_COMMITPROC_TIME

Time spent by a read request in the commit processor.

WRITE_COMMITPROC_TIME

public final Summary WRITE_COMMITPROC_TIME

Time spent by a write request in the commit processor.

LOCAL_WRITE_COMMITTED_TIME

public final Summary LOCAL_WRITE_COMMITTED_TIME

Time spent by a committed request, for a locally issued write, in the commit processor.

SERVER_WRITE_COMMITTED_TIME

public final Summary SERVER_WRITE_COMMITTED_TIME

Time spent by a committed request for a write, issued by other server, in the commit processor.

COMMIT_PROCESS_TIME

public final Summary COMMIT_PROCESS_TIME

OM_PROPOSAL_PROCESS_TIME

public final Summary OM_PROPOSAL_PROCESS_TIME

Observer Master processing metrics.

OM_COMMIT_PROCESS_TIME

public final Summary OM_COMMIT_PROCESS_TIME

READ_FINAL_PROC_TIME

public final Summary READ_FINAL_PROC_TIME

Time spent by the final processor. This is tracked in the commit processor.

WRITE_FINAL_PROC_TIME

public final Summary WRITE_FINAL_PROC_TIME

ENSEMBLE_AUTH_SUCCESS

public final Counter ENSEMBLE_AUTH_SUCCESS

ENSEMBLE_AUTH_FAIL

public final Counter ENSEMBLE_AUTH_FAIL

ENSEMBLE_AUTH_SKIP

public final Counter ENSEMBLE_AUTH_SKIP

STALE_REQUESTS

public final Counter STALE_REQUESTS

STALE_REQUESTS_DROPPED

public final Counter STALE_REQUESTS_DROPPED

STALE_REPLIES

public final Counter STALE_REPLIES

REQUEST_THROTTLE_QUEUE_TIME

public final Summary REQUEST_THROTTLE_QUEUE_TIME

REQUEST_THROTTLE_WAIT_COUNT

public final Counter REQUEST_THROTTLE_WAIT_COUNT

LARGE_REQUESTS_REJECTED

public final Counter LARGE_REQUESTS_REJECTED

NETTY_QUEUED_BUFFER

public final Summary NETTY_QUEUED_BUFFER

DIGEST_MISMATCHES_COUNT

public final Counter DIGEST_MISMATCHES_COUNT

LEARNER_REQUEST_PROCESSOR_QUEUE_SIZE

public final Summary LEARNER_REQUEST_PROCESSOR_QUEUE_SIZE

UNSUCCESSFUL_HANDSHAKE

public final Counter UNSUCCESSFUL_HANDSHAKE

INSECURE_ADMIN

public final Counter INSECURE_ADMIN

TLS_HANDSHAKE_EXCEEDED

public final Counter TLS_HANDSHAKE_EXCEEDED

CNXN_CLOSED_WITHOUT_ZK_SERVER_RUNNING

public final Counter CNXN_CLOSED_WITHOUT_ZK_SERVER_RUNNING

SKIP_LEARNER_REQUEST_TO_NEXT_PROCESSOR_COUNT

public final Counter SKIP_LEARNER_REQUEST_TO_NEXT_PROCESSOR_COUNT

SOCKET_CLOSING_TIME

public final Summary SOCKET_CLOSING_TIME

REQUESTS_NOT_FORWARDED_TO_COMMIT_PROCESSOR

public final Counter REQUESTS_NOT_FORWARDED_TO_COMMIT_PROCESSOR

RESPONSE_BYTES

public final Counter RESPONSE_BYTES

Number of response/watch bytes written to clients.

WATCH_BYTES

public final Counter WATCH_BYTES

JVM_PAUSE_TIME

public final Summary JVM_PAUSE_TIME

Method Detail

getMetrics

public static ServerMetrics getMetrics()

Access current ServerMetrics.

Returns:

a reference to the current Metrics

metricsProviderInitialized

public static void metricsProviderInitialized(MetricsProvider metricsProvider)

resetAll

public void resetAll()

getMetricsProvider

public MetricsProvider getMetricsProvider()