/
nimbus.clj
2592 lines (2371 loc) · 134 KB
/
nimbus.clj
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;; Licensed to the Apache Software Foundation (ASF) under one
;; or more contributor license agreements. See the NOTICE file
;; distributed with this work for additional information
;; regarding copyright ownership. The ASF licenses this file
;; to you under the Apache License, Version 2.0 (the
;; "License"); you may not use this file except in compliance
;; with the License. You may obtain a copy of the License at
;;
;; http://www.apache.org/licenses/LICENSE-2.0
;;
;; Unless required by applicable law or agreed to in writing, software
;; distributed under the License is distributed on an "AS IS" BASIS,
;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
;; See the License for the specific language governing permissions and
;; limitations under the License.
(ns org.apache.storm.daemon.nimbus
(:import [org.apache.thrift.server THsHaServer THsHaServer$Args])
(:import [org.apache.storm.generated KeyNotFoundException])
(:import [org.apache.storm.security INimbusCredentialPlugin])
(:import [org.apache.storm.blobstore LocalFsBlobStore])
(:import [org.apache.thrift.protocol TBinaryProtocol TBinaryProtocol$Factory])
(:import [org.apache.thrift.exception])
(:import [org.apache.thrift.transport TNonblockingServerTransport TNonblockingServerSocket])
(:import [org.apache.commons.io FileUtils])
(:import [javax.security.auth Subject])
(:import [org.apache.storm.security.auth NimbusPrincipal])
(:import [java.nio ByteBuffer]
[java.util Collections List HashMap]
[org.apache.storm.generated NimbusSummary])
(:import [java.nio ByteBuffer]
[java.util Collections List HashMap ArrayList Iterator HashSet])
(:import [org.apache.storm.blobstore AtomicOutputStream BlobStoreAclHandler
InputStreamWithMeta KeyFilter KeySequenceNumber BlobSynchronizer BlobStoreUtils])
(:import [java.io File FileOutputStream FileInputStream])
(:import [java.net InetAddress ServerSocket BindException])
(:import [java.nio.channels Channels WritableByteChannel])
(:import [org.apache.storm.security.auth ThriftServer ThriftConnectionType ReqContext AuthUtils])
(:use [org.apache.storm.scheduler.DefaultScheduler])
(:import [org.apache.storm.scheduler INimbus SupervisorDetails WorkerSlot TopologyDetails
Cluster Topologies SchedulerAssignment SchedulerAssignmentImpl DefaultScheduler ExecutorDetails])
(:import [org.apache.storm.nimbus NimbusInfo])
(:import [org.apache.storm.scheduler.resource ResourceUtils])
(:import [org.apache.storm.utils TimeCacheMap TimeCacheMap$ExpiredCallback Utils TupleUtils ThriftTopologyUtils
BufferFileInputStream BufferInputStream])
(:import [org.apache.storm.generated NotAliveException AlreadyAliveException StormTopology ErrorInfo
ExecutorInfo InvalidTopologyException Nimbus$Iface Nimbus$Processor SubmitOptions TopologyInitialStatus
KillOptions RebalanceOptions ClusterSummary SupervisorSummary TopologySummary TopologyInfo TopologyHistoryInfo
ExecutorSummary AuthorizationException GetInfoOptions NumErrorsChoice SettableBlobMeta ReadableBlobMeta
BeginDownloadResult ListBlobsResult ComponentPageInfo TopologyPageInfo LogConfig LogLevel LogLevelAction
ProfileRequest ProfileAction NodeInfo SupervisorPageInfo WorkerSummary WorkerResources ComponentType])
(:import [org.apache.storm.daemon Shutdownable])
(:import [org.apache.storm.cluster ClusterStateContext DaemonType])
(:use [org.apache.storm util config log timer zookeeper local-state])
(:require [org.apache.storm [cluster :as cluster]
[converter :as converter]
[stats :as stats]])
(:require [org.apache.storm.ui.core :as ui])
(:require [clojure.set :as set])
(:import [org.apache.storm.daemon.common StormBase Assignment])
(:use [org.apache.storm.daemon common])
(:use [org.apache.storm config])
(:import [org.apache.zookeeper data.ACL ZooDefs$Ids ZooDefs$Perms])
(:import [org.apache.storm.utils VersionInfo Time]
(org.apache.storm.metric ClusterMetricsConsumerExecutor)
(org.apache.storm.metric.api IClusterMetricsConsumer$ClusterInfo DataPoint IClusterMetricsConsumer$SupervisorInfo)
(org.apache.storm Config)
(com.google.common.collect Sets))
(:require [clj-time.core :as time])
(:require [clj-time.coerce :as coerce])
(:require [metrics.meters :refer [defmeter mark!]])
(:require [metrics.gauges :refer [defgauge]])
(:gen-class
:methods [^{:static true} [launch [org.apache.storm.scheduler.INimbus] void]]))
(defmeter nimbus:num-submitTopologyWithOpts-calls)
(defmeter nimbus:num-submitTopology-calls)
(defmeter nimbus:num-killTopologyWithOpts-calls)
(defmeter nimbus:num-killTopology-calls)
(defmeter nimbus:num-rebalance-calls)
(defmeter nimbus:num-activate-calls)
(defmeter nimbus:num-deactivate-calls)
(defmeter nimbus:num-debug-calls)
(defmeter nimbus:num-setWorkerProfiler-calls)
(defmeter nimbus:num-getComponentPendingProfileActions-calls)
(defmeter nimbus:num-setLogConfig-calls)
(defmeter nimbus:num-uploadNewCredentials-calls)
(defmeter nimbus:num-beginFileUpload-calls)
(defmeter nimbus:num-uploadChunk-calls)
(defmeter nimbus:num-finishFileUpload-calls)
(defmeter nimbus:num-beginFileDownload-calls)
(defmeter nimbus:num-downloadChunk-calls)
(defmeter nimbus:num-getNimbusConf-calls)
(defmeter nimbus:num-getLogConfig-calls)
(defmeter nimbus:num-getTopologyConf-calls)
(defmeter nimbus:num-getTopology-calls)
(defmeter nimbus:num-getUserTopology-calls)
(defmeter nimbus:num-getClusterInfo-calls)
(defmeter nimbus:num-getLeader-calls)
(defmeter nimbus:num-isTopologyNameAllowed-calls)
(defmeter nimbus:num-getTopologyInfoWithOpts-calls)
(defmeter nimbus:num-getTopologyInfo-calls)
(defmeter nimbus:num-getTopologyPageInfo-calls)
(defmeter nimbus:num-getSupervisorPageInfo-calls)
(defmeter nimbus:num-getComponentPageInfo-calls)
(defmeter nimbus:num-shutdown-calls)
(def STORM-VERSION (VersionInfo/getVersion))
(defn file-cache-map [conf]
(TimeCacheMap.
(int (conf NIMBUS-FILE-COPY-EXPIRATION-SECS))
(reify TimeCacheMap$ExpiredCallback
(expire [this id stream]
(.close stream)
))
))
(defn mk-scheduler [conf inimbus]
(let [forced-scheduler (.getForcedScheduler inimbus)
scheduler (cond
forced-scheduler
(do (log-message "Using forced scheduler from INimbus " (class forced-scheduler))
forced-scheduler)
(conf STORM-SCHEDULER)
(do (log-message "Using custom scheduler: " (conf STORM-SCHEDULER))
(-> (conf STORM-SCHEDULER) new-instance))
:else
(do (log-message "Using default scheduler")
(DefaultScheduler.)))]
(.prepare scheduler conf)
scheduler
))
(defmulti blob-sync cluster-mode)
(defnk is-leader [nimbus :throw-exception true]
(let [leader-elector (:leader-elector nimbus)]
(if (.isLeader leader-elector) true
(if throw-exception
(let [leader-address (.getLeader leader-elector)]
(throw (RuntimeException. (str "not a leader, current leader is " leader-address))))))))
(def NIMBUS-ZK-ACLS
[(first ZooDefs$Ids/CREATOR_ALL_ACL)
(ACL. (bit-or ZooDefs$Perms/READ ZooDefs$Perms/CREATE) ZooDefs$Ids/ANYONE_ID_UNSAFE)])
(defn mk-blob-cache-map
"Constructs a TimeCacheMap instance with a blob store timeout whose
expiration callback invokes cancel on the value held by an expired entry when
that value is an AtomicOutputStream and calls close otherwise."
[conf]
(TimeCacheMap.
(int (conf NIMBUS-BLOBSTORE-EXPIRATION-SECS))
(reify TimeCacheMap$ExpiredCallback
(expire [this id stream]
(if (instance? AtomicOutputStream stream)
(.cancel stream)
(.close stream))))))
(defn mk-bloblist-cache-map
"Constructs a TimeCacheMap instance with a blobstore timeout and no callback
function."
[conf]
(TimeCacheMap. (int (conf NIMBUS-BLOBSTORE-EXPIRATION-SECS))))
(defn create-tology-action-notifier [conf]
(when-not (clojure.string/blank? (conf NIMBUS-TOPOLOGY-ACTION-NOTIFIER-PLUGIN))
(let [instance (new-instance (conf NIMBUS-TOPOLOGY-ACTION-NOTIFIER-PLUGIN))]
(try
(.prepare instance conf)
instance
(catch Exception e
(log-warn-error e "Ingoring exception, Could not initialize " (conf NIMBUS-TOPOLOGY-ACTION-NOTIFIER-PLUGIN)))))))
(defn mk-cluster-metrics-consumer-executors [storm-conf]
(map
(fn [consumer]
(ClusterMetricsConsumerExecutor. (get consumer "class")
(get consumer "argument")))
(get storm-conf STORM-CLUSTER-METRICS-CONSUMER-REGISTER)))
(defn nimbus-data [conf inimbus]
(let [forced-scheduler (.getForcedScheduler inimbus)
blob-store (Utils/getNimbusBlobStore conf (NimbusInfo/fromConf conf))]
{:conf conf
:nimbus-host-port-info (NimbusInfo/fromConf conf)
:inimbus inimbus
:authorization-handler (mk-authorization-handler (conf NIMBUS-AUTHORIZER) conf)
:impersonation-authorization-handler (mk-authorization-handler (conf NIMBUS-IMPERSONATION-AUTHORIZER) conf)
:submitted-count (atom 0)
:storm-cluster-state (cluster/mk-storm-cluster-state conf :acls (when
(Utils/isZkAuthenticationConfiguredStormServer
conf)
NIMBUS-ZK-ACLS)
:context (ClusterStateContext. DaemonType/NIMBUS))
:submit-lock (Object.)
:sched-lock (Object.)
:cred-update-lock (Object.)
:log-update-lock (Object.)
:heartbeats-cache (atom {})
:downloaders (file-cache-map conf)
:uploaders (file-cache-map conf)
:blob-store blob-store
:blob-downloaders (mk-blob-cache-map conf)
:blob-uploaders (mk-blob-cache-map conf)
:blob-listers (mk-bloblist-cache-map conf)
:uptime (uptime-computer)
:validator (new-instance (conf NIMBUS-TOPOLOGY-VALIDATOR))
:timer (mk-timer :kill-fn (fn [t]
(log-error t "Error when processing event")
(exit-process! 20 "Error when processing an event")
))
:scheduler (mk-scheduler conf inimbus)
:leader-elector (zk-leader-elector conf blob-store)
:id->sched-status (atom {})
:node-id->resources (atom {}) ;;resources of supervisors
:id->resources (atom {}) ;;resources of topologies
:id->worker-resources (atom {}) ; resources of workers per topology
:cred-renewers (AuthUtils/GetCredentialRenewers conf)
:topology-history-lock (Object.)
:topo-history-state (nimbus-topo-history-state conf)
:nimbus-autocred-plugins (AuthUtils/getNimbusAutoCredPlugins conf)
:nimbus-topology-action-notifier (create-tology-action-notifier conf)
:cluster-consumer-executors (mk-cluster-metrics-consumer-executors conf)
}))
(defn inbox [nimbus]
(master-inbox (:conf nimbus)))
(defn- get-subject
[]
(let [req (ReqContext/context)]
(.subject req)))
(defn- read-storm-conf [conf storm-id blob-store]
(clojurify-structure
(Utils/fromCompressedJsonConf
(.readBlob blob-store (master-stormconf-key storm-id) (get-subject)))))
(declare delay-event)
(declare mk-assignments)
(defn get-nimbus-subject
[]
(let [subject (Subject.)
principal (NimbusPrincipal.)
principals (.getPrincipals subject)]
(.add principals principal)
subject))
(def nimbus-subject
(get-nimbus-subject))
(defn- get-key-list-from-id
[conf id]
(log-debug "set keys id = " id "set = " #{(master-stormcode-key id) (master-stormjar-key id) (master-stormconf-key id)})
(if (local-mode? conf)
[(master-stormcode-key id) (master-stormconf-key id)]
[(master-stormcode-key id) (master-stormjar-key id) (master-stormconf-key id)]))
(defn kill-transition [nimbus storm-id]
(fn [kill-time]
(let [delay (if kill-time
kill-time
(get (read-storm-conf (:conf nimbus) storm-id (:blob-store nimbus))
TOPOLOGY-MESSAGE-TIMEOUT-SECS))]
(delay-event nimbus
storm-id
delay
:remove)
{
:status {:type :killed}
:topology-action-options {:delay-secs delay :action :kill}})
))
(defn rebalance-transition [nimbus storm-id status]
(fn [time num-workers executor-overrides]
(let [delay (if time
time
(get (read-storm-conf (:conf nimbus) storm-id (:blob-store nimbus))
TOPOLOGY-MESSAGE-TIMEOUT-SECS))]
(delay-event nimbus
storm-id
delay
:do-rebalance)
{:status {:type :rebalancing}
:prev-status status
:topology-action-options (-> {:delay-secs delay :action :rebalance}
(assoc-non-nil :num-workers num-workers)
(assoc-non-nil :component->executors executor-overrides))
})))
(defn do-rebalance [nimbus storm-id status storm-base]
(let [rebalance-options (:topology-action-options storm-base)]
(.update-storm! (:storm-cluster-state nimbus)
storm-id
(-> {}
(assoc-non-nil :component->executors (:component->executors rebalance-options))
(assoc-non-nil :num-workers (:num-workers rebalance-options)))))
(mk-assignments nimbus :scratch-topology-id storm-id))
(defn state-transitions [nimbus storm-id status storm-base]
{:active {:inactivate :inactive
:activate nil
:rebalance (rebalance-transition nimbus storm-id status)
:kill (kill-transition nimbus storm-id)
}
:inactive {:activate :active
:inactivate nil
:rebalance (rebalance-transition nimbus storm-id status)
:kill (kill-transition nimbus storm-id)
}
:killed {:startup (fn [] (delay-event nimbus
storm-id
(-> storm-base
:topology-action-options
:delay-secs)
:remove)
nil)
:kill (kill-transition nimbus storm-id)
:remove (fn []
(log-message "Killing topology: " storm-id)
(.remove-storm! (:storm-cluster-state nimbus)
storm-id)
(when (instance? LocalFsBlobStore (:blob-store nimbus))
(doseq [blob-key (get-key-list-from-id (:conf nimbus) storm-id)]
(.remove-blobstore-key! (:storm-cluster-state nimbus) blob-key)
(.remove-key-version! (:storm-cluster-state nimbus) blob-key)))
nil)
}
:rebalancing {:startup (fn [] (delay-event nimbus
storm-id
(-> storm-base
:topology-action-options
:delay-secs)
:do-rebalance)
nil)
:kill (kill-transition nimbus storm-id)
:do-rebalance (fn []
(do-rebalance nimbus storm-id status storm-base)
{:status {:type (:type (:prev-status storm-base))}
:prev-status :rebalancing
:topology-action-options nil})
}})
(defn transition!
([nimbus storm-id event]
(transition! nimbus storm-id event false))
([nimbus storm-id event error-on-no-transition?]
(is-leader nimbus)
(locking (:submit-lock nimbus)
(let [system-events #{:startup}
[event & event-args] (if (keyword? event) [event] event)
storm-base (-> nimbus :storm-cluster-state (.storm-base storm-id nil))
status (:status storm-base)]
;; handles the case where event was scheduled but topology has been removed
(if-not status
(log-message "Cannot apply event " event " to " storm-id " because topology no longer exists")
(let [get-event (fn [m e]
(if (contains? m e)
(m e)
(let [msg (str "No transition for event: " event
", status: " status,
" storm-id: " storm-id)]
(if error-on-no-transition?
(throw-runtime msg)
(do (when-not (contains? system-events event)
(log-message msg))
nil))
)))
transition (-> (state-transitions nimbus storm-id status storm-base)
(get (:type status))
(get-event event))
transition (if (or (nil? transition)
(keyword? transition))
(fn [] transition)
transition)
storm-base-updates (apply transition event-args)
storm-base-updates (if (keyword? storm-base-updates) ;if it's just a symbol, that just indicates new status.
{:status {:type storm-base-updates}}
storm-base-updates)]
(when storm-base-updates
(.update-storm! (:storm-cluster-state nimbus) storm-id storm-base-updates)))))
)))
(defn transition-name! [nimbus storm-name event & args]
(let [storm-id (get-storm-id (:storm-cluster-state nimbus) storm-name)]
(when-not storm-id
(throw (NotAliveException. storm-name)))
(apply transition! nimbus storm-id event args)))
(defn delay-event [nimbus storm-id delay-secs event]
(log-message "Delaying event " event " for " delay-secs " secs for " storm-id)
(schedule (:timer nimbus)
(or delay-secs 0)
#(try (transition! nimbus storm-id event false)
(catch Exception e (log-error e "Exception while trying transition for " storm-id " and event " event)))))
;; active -> reassign in X secs
;; killed -> wait kill time then shutdown
;; active -> reassign in X secs
;; inactive -> nothing
;; rebalance -> wait X seconds then rebalance
;; swap... (need to handle kill during swap, etc.)
;; event transitions are delayed by timer... anything else that comes through (e.g. a kill) override the transition? or just disable other transitions during the transition?
(defmulti setup-jar cluster-mode)
(defmulti clean-inbox cluster-mode)
;; swapping design
;; -- need 2 ports per worker (swap port and regular port)
;; -- topology that swaps in can use all the existing topologies swap ports, + unused worker slots
;; -- how to define worker resources? port range + number of workers?
;; Monitoring (or by checking when nodes go down or heartbeats aren't received):
;; 1. read assignment
;; 2. see which executors/nodes are up
;; 3. make new assignment to fix any problems
;; 4. if a storm exists but is not taken down fully, ensure that storm takedown is launched (step by step remove executors and finally remove assignments)
(defn- assigned-slots
"Returns a map from node-id to a set of ports"
[storm-cluster-state]
(let [assignments (.assignments storm-cluster-state nil)]
(defaulted
(apply merge-with set/union
(for [a assignments
[_ [node port]] (-> (.assignment-info storm-cluster-state a nil) :executor->node+port)]
{node #{port}}
))
{})
))
;; public for testing
(defn all-supervisor-info
([storm-cluster-state] (all-supervisor-info storm-cluster-state nil))
([storm-cluster-state callback]
(let [supervisor-ids (.supervisors storm-cluster-state callback)]
(into {}
(mapcat
(fn [id]
(if-let [info (.supervisor-info storm-cluster-state id)]
[[id info]]
))
supervisor-ids))
)))
(defn- get-version-for-key [key nimbus-host-port-info conf]
(let [version (KeySequenceNumber. key nimbus-host-port-info)]
(.getKeySequenceNumber version conf)))
(defn get-key-seq-from-blob-store [blob-store]
(let [key-iter (.listKeys blob-store)]
(iterator-seq key-iter)))
(defn- setup-storm-code [nimbus conf storm-id tmp-jar-location storm-conf topology]
(let [subject (get-subject)
storm-cluster-state (:storm-cluster-state nimbus)
blob-store (:blob-store nimbus)
jar-key (master-stormjar-key storm-id)
code-key (master-stormcode-key storm-id)
conf-key (master-stormconf-key storm-id)
nimbus-host-port-info (:nimbus-host-port-info nimbus)]
(when tmp-jar-location ;;in local mode there is no jar
(.createBlob blob-store jar-key (FileInputStream. tmp-jar-location) (SettableBlobMeta. BlobStoreAclHandler/DEFAULT) subject)
(if (instance? LocalFsBlobStore blob-store)
(.setup-blobstore! storm-cluster-state jar-key nimbus-host-port-info (get-version-for-key jar-key nimbus-host-port-info conf))))
(.createBlob blob-store conf-key (Utils/toCompressedJsonConf storm-conf) (SettableBlobMeta. BlobStoreAclHandler/DEFAULT) subject)
(if (instance? LocalFsBlobStore blob-store)
(.setup-blobstore! storm-cluster-state conf-key nimbus-host-port-info (get-version-for-key conf-key nimbus-host-port-info conf)))
(.createBlob blob-store code-key (Utils/serialize topology) (SettableBlobMeta. BlobStoreAclHandler/DEFAULT) subject)
(if (instance? LocalFsBlobStore blob-store)
(.setup-blobstore! storm-cluster-state code-key nimbus-host-port-info (get-version-for-key code-key nimbus-host-port-info conf)))))
(defn- read-storm-topology [storm-id blob-store]
(Utils/deserialize
(.readBlob blob-store (master-stormcode-key storm-id) (get-subject)) StormTopology))
(defn get-blob-replication-count
[blob-key nimbus]
(if (:blob-store nimbus)
(-> (:blob-store nimbus)
(.getBlobReplication blob-key nimbus-subject))))
(defn- wait-for-desired-code-replication [nimbus conf storm-id]
(let [min-replication-count (conf TOPOLOGY-MIN-REPLICATION-COUNT)
max-replication-wait-time (conf TOPOLOGY-MAX-REPLICATION-WAIT-TIME-SEC)
current-replication-count-jar (if (not (local-mode? conf))
(atom (get-blob-replication-count (master-stormjar-key storm-id) nimbus))
(atom min-replication-count))
current-replication-count-code (atom (get-blob-replication-count (master-stormcode-key storm-id) nimbus))
current-replication-count-conf (atom (get-blob-replication-count (master-stormconf-key storm-id) nimbus))
total-wait-time (atom 0)]
(if (:blob-store nimbus)
(while (and
(or (> min-replication-count @current-replication-count-jar)
(> min-replication-count @current-replication-count-code)
(> min-replication-count @current-replication-count-conf))
(or (neg? max-replication-wait-time)
(< @total-wait-time max-replication-wait-time)))
(sleep-secs 1)
(log-debug "Checking if I am still the leader")
(is-leader nimbus)
(log-debug "waiting for desired replication to be achieved for storm-id = " storm-id
" min-replication-count = " min-replication-count " max-replication-wait-time = " max-replication-wait-time
(if (not (local-mode? conf))"current-replication-count for jar key = " @current-replication-count-jar)
"current-replication-count for code key = " @current-replication-count-code
"current-replication-count for conf key = " @current-replication-count-conf
" total-wait-time " @total-wait-time)
(swap! total-wait-time inc)
(if (not (local-mode? conf))
(reset! current-replication-count-jar (get-blob-replication-count (master-stormjar-key storm-id) nimbus)))
(reset! current-replication-count-code (get-blob-replication-count (master-stormcode-key storm-id) nimbus))
(reset! current-replication-count-conf (get-blob-replication-count (master-stormconf-key storm-id) nimbus))))
(if (and (<= min-replication-count @current-replication-count-conf)
(<= min-replication-count @current-replication-count-code)
(<= min-replication-count @current-replication-count-jar))
(log-message "desired replication count " min-replication-count " achieved, "
"current-replication-count for conf key = " @current-replication-count-conf ", "
"current-replication-count for code key = " @current-replication-count-code ", "
"current-replication-count for jar key = " @current-replication-count-jar)
(log-message "desired replication count of " min-replication-count " not achieved but we have hit the max wait time "
max-replication-wait-time " so moving on with replication count for conf key = " @current-replication-count-conf
" for code key = " @current-replication-count-code "for jar key = " @current-replication-count-jar))))
(defn- read-storm-topology-as-nimbus [storm-id blob-store]
(Utils/deserialize
(.readBlob blob-store (master-stormcode-key storm-id) nimbus-subject) StormTopology))
(declare compute-executor->component)
(defn read-storm-conf-as-nimbus [storm-id blob-store]
(clojurify-structure
(Utils/fromCompressedJsonConf
(.readBlob blob-store (master-stormconf-key storm-id) nimbus-subject))))
(defn fixup-storm-base
[storm-base topo-conf]
(assoc storm-base
:owner (.get topo-conf TOPOLOGY-SUBMITTER-USER)
:principal (.get topo-conf TOPOLOGY-SUBMITTER-PRINCIPAL)))
(defn read-topology-details [nimbus storm-id]
(let [blob-store (:blob-store nimbus)
storm-base (or
(.storm-base (:storm-cluster-state nimbus) storm-id nil)
(throw (NotAliveException. storm-id)))
topology-conf (read-storm-conf-as-nimbus storm-id blob-store)
storm-base (if (nil? (:principal storm-base))
(let [new-sb (fixup-storm-base storm-base topology-conf)]
(.update-storm! (:storm-cluster-state nimbus) storm-id new-sb)
new-sb)
storm-base)
topology (read-storm-topology-as-nimbus storm-id blob-store)
executor->component (->> (compute-executor->component nimbus storm-id)
(map-key (fn [[start-task end-task]]
(ExecutorDetails. (int start-task) (int end-task)))))]
(TopologyDetails. storm-id
topology-conf
topology
(:num-workers storm-base)
executor->component
(:launch-time-secs storm-base)
(:owner storm-base))))
;; Does not assume that clocks are synchronized. Executor heartbeat is only used so that
;; nimbus knows when it's received a new heartbeat. All timing is done by nimbus and
;; tracked through heartbeat-cache
(defn- update-executor-cache [curr hb timeout]
(let [reported-time (:time-secs hb)
{last-nimbus-time :nimbus-time
last-reported-time :executor-reported-time} curr
reported-time (cond reported-time reported-time
last-reported-time last-reported-time
:else 0)
nimbus-time (if (or (not last-nimbus-time)
(not= last-reported-time reported-time))
(current-time-secs)
last-nimbus-time
)]
{:is-timed-out (and
nimbus-time
(>= (time-delta nimbus-time) timeout))
:nimbus-time nimbus-time
:executor-reported-time reported-time
:heartbeat hb}))
(defn update-heartbeat-cache [cache executor-beats all-executors timeout]
(let [cache (select-keys cache all-executors)]
(into {}
(for [executor all-executors :let [curr (cache executor)]]
[executor
(update-executor-cache curr (get executor-beats executor) timeout)]
))))
(defn update-heartbeats! [nimbus storm-id all-executors existing-assignment]
(log-debug "Updating heartbeats for " storm-id " " (pr-str all-executors))
(let [storm-cluster-state (:storm-cluster-state nimbus)
executor-beats (.executor-beats storm-cluster-state storm-id (:executor->node+port existing-assignment))
cache (update-heartbeat-cache (@(:heartbeats-cache nimbus) storm-id)
executor-beats
all-executors
((:conf nimbus) NIMBUS-TASK-TIMEOUT-SECS))]
(swap! (:heartbeats-cache nimbus) assoc storm-id cache)))
(defn- update-all-heartbeats! [nimbus existing-assignments topology->executors]
"update all the heartbeats for all the topologies's executors"
(doseq [[tid assignment] existing-assignments
:let [all-executors (topology->executors tid)]]
(update-heartbeats! nimbus tid all-executors assignment)))
(defn- alive-executors
[nimbus ^TopologyDetails topology-details all-executors existing-assignment]
(log-debug "Computing alive executors for " (.getId topology-details) "\n"
"Executors: " (pr-str all-executors) "\n"
"Assignment: " (pr-str existing-assignment) "\n"
"Heartbeat cache: " (pr-str (@(:heartbeats-cache nimbus) (.getId topology-details)))
)
;; TODO: need to consider all executors associated with a dead executor (in same slot) dead as well,
;; don't just rely on heartbeat being the same
(let [conf (:conf nimbus)
storm-id (.getId topology-details)
executor-start-times (:executor->start-time-secs existing-assignment)
heartbeats-cache (@(:heartbeats-cache nimbus) storm-id)]
(->> all-executors
(filter (fn [executor]
(let [start-time (get executor-start-times executor)
is-timed-out (-> heartbeats-cache (get executor) :is-timed-out)]
(if (and start-time
(or
(< (time-delta start-time)
(conf NIMBUS-TASK-LAUNCH-SECS))
(not is-timed-out)
))
true
(do
(log-message "Executor " storm-id ":" executor " not alive")
false))
)))
doall)))
(defn- to-executor-id [task-ids]
[(first task-ids) (last task-ids)])
(defn- compute-executors [nimbus storm-id]
(let [conf (:conf nimbus)
blob-store (:blob-store nimbus)
storm-base (.storm-base (:storm-cluster-state nimbus) storm-id nil)
component->executors (:component->executors storm-base)
storm-conf (read-storm-conf-as-nimbus storm-id blob-store)
topology (read-storm-topology-as-nimbus storm-id blob-store)
task->component (storm-task-info topology storm-conf)]
(if (nil? component->executors)
[]
(->> (storm-task-info topology storm-conf)
reverse-map
(map-val sort)
(join-maps component->executors)
(map-val (partial apply partition-fixed))
(mapcat second)
(map to-executor-id)
))))
(defn- compute-executor->component [nimbus storm-id]
(let [conf (:conf nimbus)
blob-store (:blob-store nimbus)
executors (compute-executors nimbus storm-id)
topology (read-storm-topology-as-nimbus storm-id blob-store)
storm-conf (read-storm-conf-as-nimbus storm-id blob-store)
task->component (storm-task-info topology storm-conf)
executor->component (into {} (for [executor executors
:let [start-task (first executor)
component (task->component start-task)]]
{executor component}))]
executor->component))
(defn- compute-topology->executors [nimbus storm-ids]
"compute a topology-id -> executors map"
(into {} (for [tid storm-ids]
{tid (set (compute-executors nimbus tid))})))
(defn- compute-topology->alive-executors [nimbus existing-assignments topologies topology->executors scratch-topology-id]
"compute a topology-id -> alive executors map"
(into {} (for [[tid assignment] existing-assignments
:let [topology-details (.getById topologies tid)
all-executors (topology->executors tid)
alive-executors (if (and scratch-topology-id (= scratch-topology-id tid))
all-executors
(set (alive-executors nimbus topology-details all-executors assignment)))]]
{tid alive-executors})))
(defn- compute-supervisor->dead-ports [nimbus existing-assignments topology->executors topology->alive-executors]
(let [dead-slots (into [] (for [[tid assignment] existing-assignments
:let [all-executors (topology->executors tid)
alive-executors (topology->alive-executors tid)
dead-executors (set/difference all-executors alive-executors)
dead-slots (->> (:executor->node+port assignment)
(filter #(contains? dead-executors (first %)))
vals)]]
dead-slots))
supervisor->dead-ports (->> dead-slots
(apply concat)
(map (fn [[sid port]] {sid #{port}}))
(apply (partial merge-with set/union)))]
(or supervisor->dead-ports {})))
(defn- compute-topology->scheduler-assignment [nimbus existing-assignments topology->alive-executors]
"convert assignment information in zk to SchedulerAssignment, so it can be used by scheduler api."
(into {} (for [[tid assignment] existing-assignments
:let [alive-executors (topology->alive-executors tid)
executor->node+port (:executor->node+port assignment)
worker->resources (:worker->resources assignment)
;; making a map from node+port to WorkerSlot with allocated resources
node+port->slot (into {} (for [[[node port] [mem-on-heap mem-off-heap cpu]] worker->resources]
{[node port]
(WorkerSlot. node port mem-on-heap mem-off-heap cpu)}))
executor->slot (into {} (for [[executor [node port]] executor->node+port]
;; filter out the dead executors
(if (contains? alive-executors executor)
{(ExecutorDetails. (first executor)
(second executor))
(get node+port->slot [node port])}
{})))]]
{tid (SchedulerAssignmentImpl. tid executor->slot)})))
(defn- read-all-supervisor-details
[nimbus supervisor->dead-ports topologies missing-assignment-topologies]
"return a map: {supervisor-id SupervisorDetails}"
(let [storm-cluster-state (:storm-cluster-state nimbus)
supervisor-infos (all-supervisor-info storm-cluster-state)
supervisor-details (for [[id info] supervisor-infos]
(SupervisorDetails. id (:meta info) (:resources-map info)))
;; Note that allSlotsAvailableForScheduling
;; only uses the supervisor-details. The rest of the arguments
;; are there to satisfy the INimbus interface.
all-scheduling-slots (->> (.allSlotsAvailableForScheduling
(:inimbus nimbus)
supervisor-details
topologies
(set missing-assignment-topologies))
(map (fn [s] {(.getNodeId s) #{(.getPort s)}}))
(apply merge-with set/union))]
(into {} (for [[sid supervisor-info] supervisor-infos
:let [hostname (:hostname supervisor-info)
scheduler-meta (:scheduler-meta supervisor-info)
dead-ports (supervisor->dead-ports sid)
;; hide the dead-ports from the all-ports
;; these dead-ports can be reused in next round of assignments
all-ports (-> (get all-scheduling-slots sid)
(set/difference dead-ports)
(as-> ports (map int ports)))
supervisor-details (SupervisorDetails. sid hostname scheduler-meta all-ports (:resources-map supervisor-info))]]
{sid supervisor-details}))))
(defn- compute-topology->executor->node+port [scheduler-assignments]
"convert {topology-id -> SchedulerAssignment} to
{topology-id -> {executor [node port]}}"
(map-val (fn [^SchedulerAssignment assignment]
(->> assignment
.getExecutorToSlot
(#(into {} (for [[^ExecutorDetails executor ^WorkerSlot slot] %]
{[(.getStartTask executor) (.getEndTask executor)]
[(.getNodeId slot) (.getPort slot)]})))))
scheduler-assignments))
;; NEW NOTES
;; only assign to supervisors who are there and haven't timed out
;; need to reassign workers with executors that have timed out (will this make it brittle?)
;; need to read in the topology and storm-conf from disk
;; if no slots available and no slots used by this storm, just skip and do nothing
;; otherwise, package rest of executors into available slots (up to how much it needs)
;; in the future could allocate executors intelligently (so that "close" tasks reside on same machine)
;; TODO: slots that have dead executor should be reused as long as supervisor is active
;; (defn- assigned-slots-from-scheduler-assignments [topology->assignment]
;; (->> topology->assignment
;; vals
;; (map (fn [^SchedulerAssignment a] (.getExecutorToSlot a)))
;; (mapcat vals)
;; (map (fn [^WorkerSlot s] {(.getNodeId s) #{(.getPort s)}}))
;; (apply merge-with set/union)
;; ))
(defn num-used-workers [^SchedulerAssignment scheduler-assignment]
(if scheduler-assignment
(count (.getSlots scheduler-assignment))
0 ))
(defn convert-assignments-to-worker->resources [new-scheduler-assignments]
"convert {topology-id -> SchedulerAssignment} to
{topology-id -> {[node port] [mem-on-heap mem-off-heap cpu]}}
Make sure this can deal with other non-RAS schedulers
later we may further support map-for-any-resources"
(map-val (fn [^SchedulerAssignment assignment]
(->> assignment
.getExecutorToSlot
.values
(#(into {} (for [^WorkerSlot slot %]
{[(.getNodeId slot) (.getPort slot)]
[(.getAllocatedMemOnHeap slot) (.getAllocatedMemOffHeap slot) (.getAllocatedCpu slot)]
})))))
new-scheduler-assignments))
(defn compute-new-topology->executor->node+port [new-scheduler-assignments existing-assignments]
(let [new-topology->executor->node+port (compute-topology->executor->node+port new-scheduler-assignments)]
;; print some useful information.
(doseq [[topology-id executor->node+port] new-topology->executor->node+port
:let [old-executor->node+port (-> topology-id
existing-assignments
:executor->node+port)
reassignment (filter (fn [[executor node+port]]
(and (contains? old-executor->node+port executor)
(not (= node+port (old-executor->node+port executor)))))
executor->node+port)]]
(when-not (empty? reassignment)
(let [new-slots-cnt (count (set (vals executor->node+port)))
reassign-executors (keys reassignment)]
(log-message "Reassigning " topology-id " to " new-slots-cnt " slots")
(log-message "Reassign executors: " (vec reassign-executors)))))
new-topology->executor->node+port))
(defrecord TopologyResources [requested-mem-on-heap requested-mem-off-heap requested-cpu
assigned-mem-on-heap assigned-mem-off-heap assigned-cpu])
;; public so it can be mocked out
(defn compute-new-scheduler-assignments [nimbus existing-assignments topologies scratch-topology-id]
(let [conf (:conf nimbus)
storm-cluster-state (:storm-cluster-state nimbus)
topology->executors (compute-topology->executors nimbus (keys existing-assignments))
;; update the executors heartbeats first.
_ (update-all-heartbeats! nimbus existing-assignments topology->executors)
topology->alive-executors (compute-topology->alive-executors nimbus
existing-assignments
topologies
topology->executors
scratch-topology-id)
supervisor->dead-ports (compute-supervisor->dead-ports nimbus
existing-assignments
topology->executors
topology->alive-executors)
topology->scheduler-assignment (compute-topology->scheduler-assignment nimbus
existing-assignments
topology->alive-executors)
missing-assignment-topologies (->> topologies
.getTopologies
(map (memfn getId))
(filter (fn [t]
(let [alle (get topology->executors t)
alivee (get topology->alive-executors t)]
(or (empty? alle)
(not= alle alivee)
(< (-> topology->scheduler-assignment
(get t)
num-used-workers )
(-> topologies (.getById t) .getNumWorkers)))))))
supervisors (read-all-supervisor-details nimbus
supervisor->dead-ports
topologies
missing-assignment-topologies)
cluster (Cluster. (:inimbus nimbus) supervisors topology->scheduler-assignment conf)]
;; set the status map with existing topology statuses
(.setStatusMap cluster (deref (:id->sched-status nimbus)))
;; call scheduler.schedule to schedule all the topologies
;; the new assignments for all the topologies are in the cluster object.
(.schedule (:scheduler nimbus) topologies cluster)
;;merge with existing statuses
(reset! (:id->sched-status nimbus) (merge (deref (:id->sched-status nimbus)) (.getStatusMap cluster)))
(reset! (:node-id->resources nimbus) (.getSupervisorsResourcesMap cluster))
(if-not (conf SCHEDULER-DISPLAY-RESOURCE)
(.updateAssignedMemoryForTopologyAndSupervisor cluster topologies))
; Remove both of swaps below at first opportunity. This is a hack for non-ras scheduler topology and worker resources.
(swap! (:id->resources nimbus) merge (into {} (map (fn [[k v]] [k (->TopologyResources (nth v 0) (nth v 1) (nth v 2)
(nth v 3) (nth v 4) (nth v 5))])
(.getTopologyResourcesMap cluster))))
; Remove this also at first chance
(swap! (:id->worker-resources nimbus) merge
(into {} (map (fn [[k v]] [k (map-val #(doto (WorkerResources.)
(.set_mem_on_heap (nth % 0))
(.set_mem_off_heap (nth % 1))
(.set_cpu (nth % 2))) v)])
(.getWorkerResourcesMap cluster))))
(.getAssignments cluster)))
(defn get-resources-for-topology [nimbus topo-id]
(or (get @(:id->resources nimbus) topo-id)
(try
(let [storm-cluster-state (:storm-cluster-state nimbus)
topology-details (read-topology-details nimbus topo-id)
assigned-resources (->> (.assignment-info storm-cluster-state topo-id nil)
:worker->resources
(vals)
; Default to [[0 0 0]] if there are no values
(#(or % [[0 0 0]]))
; [[on-heap, off-heap, cpu]] -> [[on-heap], [off-heap], [cpu]]
(apply map vector)
; [[on-heap], [off-heap], [cpu]] -> [on-heap-sum, off-heap-sum, cpu-sum]
(map (partial reduce +)))
worker-resources (->TopologyResources (.getTotalRequestedMemOnHeap topology-details)
(.getTotalRequestedMemOffHeap topology-details)
(.getTotalRequestedCpu topology-details)
(nth assigned-resources 0)
(nth assigned-resources 1)
(nth assigned-resources 2))]
(swap! (:id->resources nimbus) assoc topo-id worker-resources)
worker-resources)
(catch KeyNotFoundException e
; This can happen when a topology is first coming up.
; It's thrown by the blobstore code.
(log-error e "Failed to get topology details")
(->TopologyResources 0 0 0 0 0 0)))))
(defn- get-worker-resources-for-topology [nimbus topo-id]
(or (get @(:id->worker-resources nimbus) topo-id)
(try
(let [storm-cluster-state (:storm-cluster-state nimbus)
assigned-resources (->> (.assignment-info storm-cluster-state topo-id nil)
:worker->resources)
worker-resources (into {} (map #(identity {(WorkerSlot. (first (key %)) (second (key %)))
(doto (WorkerResources.)
(.set_mem_on_heap (nth (val %) 0))
(.set_mem_off_heap (nth (val %) 1))
(.set_cpu (nth (val %) 2)))}) assigned-resources))]
(swap! (:id->worker-resources nimbus) assoc topo-id worker-resources)
worker-resources))))
(defn changed-executors [executor->node+port new-executor->node+port]
(let [executor->node+port (if executor->node+port (sort executor->node+port) nil)
new-executor->node+port (if new-executor->node+port (sort new-executor->node+port) nil)
slot-assigned (reverse-map executor->node+port)
new-slot-assigned (reverse-map new-executor->node+port)
brand-new-slots (map-diff slot-assigned new-slot-assigned)]
(apply concat (vals brand-new-slots))
))
(defn newly-added-slots [existing-assignment new-assignment]
(let [old-slots (-> (:executor->node+port existing-assignment)
vals
set)
new-slots (-> (:executor->node+port new-assignment)
vals
set)]
(set/difference new-slots old-slots)))
(defn basic-supervisor-details-map [storm-cluster-state]
(let [infos (all-supervisor-info storm-cluster-state)]
(->> infos
(map (fn [[id info]]
[id (SupervisorDetails. id (:hostname info) (:scheduler-meta info) nil (:resources-map info))]))
(into {}))))
(defn- to-worker-slot [[node port]]
(WorkerSlot. node port))
(defn- fixup-assignment
[assignment td]
(assoc assignment
:owner (.getTopologySubmitter td)))
;; get existing assignment (just the executor->node+port map) -> default to {}
;; filter out ones which have a executor timeout
;; figure out available slots on cluster. add to that the used valid slots to get total slots. figure out how many executors should be in each slot (e.g., 4, 4, 4, 5)
;; only keep existing slots that satisfy one of those slots. for rest, reassign them across remaining slots
;; edge case for slots with no executor timeout but with supervisor timeout... just treat these as valid slots that can be reassigned to. worst comes to worse the executor will timeout and won't assign here next time around
(defnk mk-assignments [nimbus :scratch-topology-id nil]
(if (is-leader nimbus :throw-exception false)
(let [conf (:conf nimbus)
storm-cluster-state (:storm-cluster-state nimbus)
^INimbus inimbus (:inimbus nimbus)
;; read all the topologies
tds (locking (:submit-lock nimbus) (into {} (for [tid (.active-storms storm-cluster-state)]
{tid (read-topology-details nimbus tid)})))
topologies (Topologies. tds)
;; read all the assignments
assigned-topology-ids (.assignments storm-cluster-state nil)
existing-assignments (into {} (for [tid assigned-topology-ids]
;; for the topology which wants rebalance (specified by the scratch-topology-id)
;; we exclude its assignment, meaning that all the slots occupied by its assignment
;; will be treated as free slot in the scheduler code.
(when (or (nil? scratch-topology-id) (not= tid scratch-topology-id))