import finished trial data to tuner when experiment is resumed

src/nni_manager/common/datastore.ts

@@ -70,6 +70,18 @@ interface TrialJobInfo {
     stderrPath?: string;
 }
 
+interface HyperParameterFormat {
+    parameter_source: string;
+    parameters: Object;
+    parameter_id: number;
+}
+
+interface ExportedDataFormat {
+    parameter: Object;
+    value: Object;
+    id: string;
+}
+
 abstract class DataStore {
     public abstract init(): Promise<void>;
     public abstract close(): Promise<void>;
@@ -82,6 +94,8 @@ abstract class DataStore {
     public abstract getTrialJob(trialJobId: string): Promise<TrialJobInfo>;
     public abstract storeMetricData(trialJobId: string, data: string): Promise<void>;
     public abstract getMetricData(trialJobId?: string, metricType?: MetricType): Promise<MetricDataRecord[]>;
+    public abstract exportTrialHpConfigs(): Promise<string>;
+    public abstract getImportedData(): Promise<string[]>;
 }
 
 abstract class Database {
@@ -99,5 +113,5 @@ abstract class Database {
 
 export {
     DataStore, Database, TrialJobEvent, MetricType, MetricData, TrialJobInfo,
-    ExperimentProfileRecord, TrialJobEventRecord, MetricDataRecord
+    ExperimentProfileRecord, TrialJobEventRecord, MetricDataRecord, HyperParameterFormat, ExportedDataFormat
 };

src/nni_manager/common/manager.ts

@@ -100,6 +100,7 @@ abstract class Manager {
     public abstract getExperimentProfile(): Promise<ExperimentProfile>;
     public abstract updateExperimentProfile(experimentProfile: ExperimentProfile, updateType: ProfileUpdateType): Promise<void>;
     public abstract importData(data: string): Promise<void>;
+    public abstract exportData(): Promise<string>;
 
     public abstract addCustomizedTrialJob(hyperParams: string): Promise<void>;
     public abstract cancelTrialJobByUser(trialJobId: string): Promise<void>;

src/nni_manager/core/nniDataStore.ts

@@ -24,7 +24,8 @@ import { Deferred } from 'ts-deferred';
 
 import * as component from '../common/component';
 import { Database, DataStore, MetricData, MetricDataRecord, MetricType,
-    TrialJobEvent, TrialJobEventRecord, TrialJobInfo } from '../common/datastore';
+    TrialJobEvent, TrialJobEventRecord, TrialJobInfo, HyperParameterFormat,
+    ExportedDataFormat } from '../common/datastore';
 import { NNIError } from '../common/errors';
 import { getExperimentId, isNewExperiment } from '../common/experimentStartupInfo';
 import { getLogger, Logger } from '../common/log';
@@ -171,6 +172,61 @@ class NNIDataStore implements DataStore {
         return this.db.queryMetricData(trialJobId, metricType);
     }
 
+    public async exportTrialHpConfigs(): Promise<string> {
+        const jobs: TrialJobInfo[] = await this.listTrialJobs();
+        let exportedData: ExportedDataFormat[] = [];
+        for (const job of jobs) {
+            if (job.hyperParameters && job.finalMetricData) {
+                if (job.hyperParameters.length === 1 && job.finalMetricData.length === 1) {
+                    // optimization for non-multi-phase case
+                    const parameters: HyperParameterFormat = <HyperParameterFormat>JSON.parse(job.hyperParameters[0]);
+                    const oneEntry: ExportedDataFormat = {
+                        parameter: parameters.parameters,
+                        value: JSON.parse(job.finalMetricData[0].data),
+                        id: job.id
+                    };
+                    exportedData.push(oneEntry);
+                } else {
+                    let paraMap: Map<number, Object> = new Map();
+                    let metricMap: Map<number, Object> = new Map();
+                    for (const eachPara of job.hyperParameters) {
+                        const parameters: HyperParameterFormat = <HyperParameterFormat>JSON.parse(eachPara);
+                        paraMap.set(parameters.parameter_id, parameters.parameters);
+                    }
+                    for (const eachMetric of job.finalMetricData) {
+                        const value: Object = JSON.parse(eachMetric.data);
+                        metricMap.set(Number(eachMetric.parameterId), value);
+                    }
+                    paraMap.forEach((value: Object, key: number) => {
+                        const metricValue: Object | undefined = metricMap.get(key);
+                        if (metricValue) {
+                            const oneEntry: ExportedDataFormat = {
+                                parameter: value,
+                                value: metricValue,
+                                id: job.id
+                            };
+                            exportedData.push(oneEntry);
+                        }
+                    });
+                }
+            }
+        }
+
+        return JSON.stringify(exportedData);
+    }
+
+    public async getImportedData(): Promise<string[]> {
+        let importedData: string[] = [];
+        const importDataEvents: TrialJobEventRecord[] = await this.db.queryTrialJobEvent(undefined, 'IMPORT_DATA');
+        for (const event of importDataEvents) {
+            if (event.data) {
+                importedData.push(event.data);
+            }
+        }
+
+        return importedData;
+    }
+
     private async queryTrialJobs(status?: TrialJobStatus, trialJobId?: string): Promise<TrialJobInfo[]> {
         const result: TrialJobInfo[] = [];
         const trialJobEvents: TrialJobEventRecord[] = await this.db.queryTrialJobEvent(trialJobId);

src/nni_manager/core/nnimanager.ts

@@ -58,6 +58,8 @@ class NNIManager implements Manager {
     private status: NNIManagerStatus;
     private waitingTrials: string[];
     private trialJobs: Map<string, TrialJobDetail>;
+    private trialDataForTuner: string;
+
     private trialJobMetricListener: (metric: TrialJobMetric) => void;
 
     constructor() {
@@ -69,6 +71,7 @@ class NNIManager implements Manager {
         this.dispatcherPid = 0;
         this.waitingTrials = [];
         this.trialJobs = new Map<string, TrialJobDetail>();
+        this.trialDataForTuner = '';
 
         this.log = getLogger();
         this.dataStore = component.get(DataStore);
@@ -116,6 +119,10 @@ class NNIManager implements Manager {
         return this.dataStore.storeTrialJobEvent('IMPORT_DATA', '', data);
     }
 
+    public async exportData(): Promise<string> {
+        return this.dataStore.exportTrialHpConfigs();
+    }
+
     public addCustomizedTrialJob(hyperParams: string): Promise<void> {
         if (this.currSubmittedTrialNum >= this.experimentProfile.params.maxTrialNum) {
             return Promise.reject(
@@ -212,6 +219,16 @@ class NNIManager implements Manager {
             .filter((job: TrialJobInfo) => job.status === 'WAITING' || job.status === 'RUNNING')
             .map((job: TrialJobInfo) => this.dataStore.storeTrialJobEvent('FAILED', job.id)));
 
+        // Collect generated trials and imported trials
+        const finishedTrialData: string = await this.exportData();
+        const importedData: string[] = await this.dataStore.getImportedData();
+        let trialData: Object[] = JSON.parse(finishedTrialData);
+        for (const oneImportedData of importedData) {
+            // do not deduplicate
+            trialData = trialData.concat(<Object[]>JSON.parse(oneImportedData));
+        }
+        this.trialDataForTuner = JSON.stringify(trialData);
+
         if (this.experimentProfile.execDuration < this.experimentProfile.params.maxExecDuration &&
             this.currSubmittedTrialNum < this.experimentProfile.params.maxTrialNum &&
             this.experimentProfile.endTime) {
@@ -647,6 +664,12 @@ class NNIManager implements Manager {
         switch (commandType) {
             case INITIALIZED:
                 // Tuner is intialized, search space is set, request tuner to generate hyper parameters
+                if (this.trialDataForTuner.length > 0) {
+                    if (this.dispatcher === undefined) {
+                        throw new Error('Dispatcher error: tuner has not been setup');
+                    }
+                    this.dispatcher.sendCommand(IMPORT_DATA, this.trialDataForTuner);
+                }
                 this.requestTrialJobs(this.experimentProfile.params.trialConcurrency);
                 break;
             case NEW_TRIAL_JOB:

src/nni_manager/core/test/mockedDatastore.ts

@@ -210,6 +210,16 @@ class MockedDataStore implements DataStore {
         return result;
     }
 
+    async exportTrialHpConfigs(): Promise<string> {
+        const ret: string = '';
+        return Promise.resolve(ret);
+    }
+
+    async getImportedData(): Promise<string[]> {
+        const ret: string[] = [];
+        return Promise.resolve(ret);
+    }
+
     public getTrialJob(trialJobId: string): Promise<TrialJobInfo> {
         throw new Error("Method not implemented.");
     }

src/nni_manager/rest_server/restHandler.ts

@@ -72,6 +72,7 @@ class NNIRestHandler {
         this.addTrialJob(router);
         this.cancelTrialJob(router);
         this.getMetricData(router);
+        this.exportData(router);
 
         // Express-joi-validator configuration
         router.use((err: any, req: Request, res: Response, next: any) => {
@@ -261,6 +262,16 @@ class NNIRestHandler {
         });
     }
 
+    private exportData(router: Router): void {
+        router.get('/export-data', (req: Request, res: Response) => {
+            this.nniManager.exportData().then((exportedData: string) => {
+                res.send(exportedData);
+            }).catch((err: Error) => {
+                this.handle_error(err, res);
+            });
+        });
+    }
+
     private setErrorPathForFailedJob(jobInfo: TrialJobInfo): TrialJobInfo {
         if (jobInfo === undefined || jobInfo.status !== 'FAILED' || jobInfo.logPath === undefined) {
             return jobInfo;

src/nni_manager/rest_server/test/mockedNNIManager.ts

@@ -49,6 +49,10 @@ export class MockedNNIManager extends Manager {
     public importData(data: string): Promise<void> {
         return Promise.resolve();
     }
+    public async exportData(): Promise<string> {
+        const ret: string = '';
+        return Promise.resolve(ret);
+    }
     public getTrialJobStatistics(): Promise<TrialJobStatistics[]> {
         const deferred: Deferred<TrialJobStatistics[]> = new Deferred<TrialJobStatistics[]>();
         deferred.resolve([{

src/sdk/pynni/nni/hyperopt_tuner/hyperopt_tuner.py

@@ -153,14 +153,14 @@ def _add_index(in_x, parameter):
     Will change to format in hyperopt, like:
         {'dropout_rate': 0.8, 'conv_size': {'_index': 1, '_value': 3}, 'hidden_size': {'_index': 1, '_value': 512}}
     """
-    if TYPE not in in_x: # if at the top level
+    if NodeType.TYPE not in in_x: # if at the top level
         out_y = dict()
         for key, value in parameter.items():
             out_y[key] = _add_index(in_x[key], value)
         return out_y
     elif isinstance(in_x, dict):
-        value_type = in_x[TYPE]
-        value_format = in_x[VALUE]
+        value_type = in_x[NodeType.TYPE]
+        value_format = in_x[NodeType.VALUE]
         if value_type == "choice":
             choice_name = parameter[0] if isinstance(parameter,
                                                      list) else parameter
@@ -173,15 +173,14 @@ def _add_index(in_x, parameter):
                     choice_value_format = item[1]
                     if choice_key == choice_name:
                         return {
-                            INDEX:
-                            pos,
-                            VALUE: [
+                            NodeType.INDEX: pos,
+                            NodeType.VALUE: [
                                 choice_name,
                                 _add_index(choice_value_format, parameter[1])
                             ]
                         }
                 elif choice_name == item:
-                    return {INDEX: pos, VALUE: item}
+                    return {NodeType.INDEX: pos, NodeType.VALUE: item}
         else:
             return parameter
 

tools/nni_cmd/nnictl_utils.py

@@ -26,9 +26,9 @@
 import time
 from subprocess import call, check_output
 from .rest_utils import rest_get, rest_delete, check_rest_server_quick, check_response
+from .url_utils import trial_jobs_url, experiment_url, trial_job_id_url, export_data_url
 from pyhdfs import HdfsClient, HdfsFileNotFoundException
 from .config_utils import Config, Experiments, HDFSConfig
-from .url_utils import trial_jobs_url, experiment_url, trial_job_id_url
 from .constants import NNICTL_HOME_DIR, EXPERIMENT_INFORMATION_FORMAT, EXPERIMENT_DETAIL_FORMAT, \
      EXPERIMENT_MONITOR_INFO, TRIAL_MONITOR_HEAD, TRIAL_MONITOR_CONTENT, TRIAL_MONITOR_TAIL, REST_TIME_OUT
 from .common_utils import print_normal, print_error, print_warning, detect_process
@@ -451,30 +451,9 @@ def monitor_experiment(args):
             print_error(exception)
             exit(1)
 
-
-def parse_trial_data(content):
-    """output: List[Dict]"""
-    trial_records = []
-    for trial_data in content:
-        for phase_i in range(len(trial_data['hyperParameters'])):
-            hparam = json.loads(trial_data['hyperParameters'][phase_i])['parameters']
-            hparam['id'] = trial_data['id']
-            if 'finalMetricData' in trial_data.keys() and phase_i < len(trial_data['finalMetricData']):
-                reward = json.loads(trial_data['finalMetricData'][phase_i]['data'])
-                if isinstance(reward, (float, int)):
-                    dict_tmp = {**hparam, **{'reward': reward}}
-                elif isinstance(reward, dict):
-                    dict_tmp = {**hparam, **reward}
-                else:
-                    raise ValueError("Invalid finalMetricsData format: {}/{}".format(type(reward), reward))
-            else:
-                dict_tmp = hparam
-            trial_records.append(dict_tmp)
-    return trial_records
-
 def export_trials_data(args):
-    """export experiment metadata to csv
-    """
+    '''export experiment metadata to csv
+    '''
     nni_config = Config(get_config_filename(args))
     rest_port = nni_config.get_config('restServerPort')
     rest_pid = nni_config.get_config('restServerPid')
@@ -483,25 +462,27 @@ def export_trials_data(args):
         return
     running, response = check_rest_server_quick(rest_port)
     if running:
-        response = rest_get(trial_jobs_url(rest_port), 20)
+        response = rest_get(export_data_url(rest_port), 20)
         if response is not None and check_response(response):
-            content = json.loads(response.text)
-            # dframe = pd.DataFrame.from_records([parse_trial_data(t_data) for t_data in content])
-            # dframe.to_csv(args.csv_path, sep='\t')
-            records = parse_trial_data(content)
             if args.type == 'json':
-                json_records = []
-                for trial in records:
-                    value = trial.pop('reward', None)
-                    trial_id =  trial.pop('id', None)
-                    json_records.append({'parameter': trial, 'value': value, 'id': trial_id})
-            with open(args.path, 'w') as file:
-                if args.type == 'csv':
-                    writer = csv.DictWriter(file, set.union(*[set(r.keys()) for r in records]))
+                with open(args.path, 'w') as file:
+                    file.write(response.text)
+            elif args.type == 'csv':
+                content = json.loads(response.text)
+                trial_records = []
+                for record in content:
+                    if not isinstance(record['value'], (float, int)):
+                        formated_record = {**record['parameter'], **record['value'], **{'id': record['id']}}
+                    else:
+                        formated_record = {**record['parameter'], **{'reward': record['value'], 'id': record['id']}}
+                    trial_records.append(formated_record)
+                with open(args.path, 'w') as file:
+                    writer = csv.DictWriter(file, set.union(*[set(r.keys()) for r in trial_records]))
                     writer.writeheader()
-                    writer.writerows(records)
-                else:
-                    json.dump(json_records, file)
+                    writer.writerows(trial_records)
+            else:
+                print_error('Unknown type: %s' % args.type)
+                exit(1)
         else:
             print_error('Export failed...')
     else:

tools/nni_cmd/url_utils.py

@@ -35,6 +35,8 @@
 
 TRIAL_JOBS_API = '/trial-jobs'
 
+EXPORT_DATA_API = '/export-data'
+
 TENSORBOARD_API = '/tensorboard'
 
 
@@ -68,6 +70,11 @@ def trial_job_id_url(port, job_id):
     return '{0}:{1}{2}{3}/:{4}'.format(BASE_URL, port, API_ROOT_URL, TRIAL_JOBS_API, job_id)
 
 
+def export_data_url(port):
+    '''get export_data url'''
+    return '{0}:{1}{2}{3}'.format(BASE_URL, port, API_ROOT_URL, EXPORT_DATA_API)
+
+
 def tensorboard_url(port):
     '''get tensorboard url'''
     return '{0}:{1}{2}{3}'.format(BASE_URL, port, API_ROOT_URL, TENSORBOARD_API)