Examples with PSMatricesLoadContext com.tencent.angel.model.PSMatricesLoadContext used on opensource projects

Example 1 with PSMatricesLoadContext

use of com.tencent.angel.model.PSMatricesLoadContext in project angel by Tencent.

the class MasterService method psReport.

/**
 * response for parameter server heartbeat
 *
 * @param controller rpc controller of protobuf
 * @param request heartbeat request
 */
@SuppressWarnings("unchecked")
@Override
public PSReportResponse psReport(RpcController controller, PSReportRequest request) throws ServiceException {
    if (LOG.isDebugEnabled()) {
        LOG.debug("receive ps heartbeat request. request=" + request);
    }
    // parse parameter server counters
    List<Pair> params = request.getMetricsList();
    int size = params.size();
    Map<String, String> paramsMap = new HashMap<String, String>();
    for (int i = 0; i < size; i++) {
        paramsMap.put(params.get(i).getKey(), params.get(i).getValue());
    }
    PSAttemptId psAttemptId = ProtobufUtil.convertToId(request.getPsAttemptId());
    PSReportResponse.Builder resBuilder = PSReportResponse.newBuilder();
    if (!context.getParameterServerManager().isAlive(psAttemptId)) {
        // if psAttemptId is not in monitor set, just return a PSCOMMAND_SHUTDOWN command.
        LOG.error("ps attempt " + psAttemptId + " is not in running ps attempt set");
        resBuilder.setPsCommand(PSCommandProto.PSCOMMAND_SHUTDOWN);
    } else {
        resBuilder.setPsCommand(PSCommandProto.PSCOMMAND_OK);
        // refresh last heartbeat timestamp
        context.getParameterServerManager().alive(psAttemptId);
        // send a state update event to the specific PSAttempt
        context.getEventHandler().handle(new PSAttemptStateUpdateEvent(psAttemptId, paramsMap));
        // Check is there save request
        PSMatricesSaveContext subSaveContext = context.getModelSaver().getSaveContext(psAttemptId.getPsId());
        PSMatricesSaveResult subSaveResult = context.getModelSaver().getSaveResult(psAttemptId.getPsId());
        if (subSaveContext != null && subSaveResult != null && (subSaveContext.getRequestId() == subSaveResult.getRequestId()) && (subSaveResult.getState() == SaveState.INIT || subSaveResult.getState() == SaveState.SAVING)) {
            // LOG.info("PS " + psAttemptId + " need save " + subSaveContext);
            resBuilder.setNeedSaveMatrices(ProtobufUtil.convert(subSaveContext));
        }
        // Check is there load request
        PSMatricesLoadContext subLoadContext = context.getModelLoader().getLoadContext(psAttemptId.getPsId());
        PSMatricesLoadResult subLoadResult = context.getModelLoader().getLoadResult(psAttemptId.getPsId());
        if (subLoadContext != null && subLoadResult != null && subLoadContext.getRequestId() == subLoadResult.getRequestId() && (subLoadResult.getState() == LoadState.INIT || subLoadResult.getState() == LoadState.LOADING)) {
            // LOG.info("PS " + psAttemptId + " need load " + subLoadContext);
            resBuilder.setNeedLoadMatrices(ProtobufUtil.convert(subLoadContext));
        }
        // check matrix metadata inconsistencies between master and parameter server.
        // if a matrix exists on the Master and does not exist on ps, then it is necessary to notify ps to establish the matrix
        // if a matrix exists on the ps and does not exist on master, then it is necessary to notify ps to remove the matrix
        List<MatrixReportProto> matrixReportsProto = request.getMatrixReportsList();
        List<Integer> needReleaseMatrices = new ArrayList<>();
        List<MatrixMeta> needCreateMatrices = new ArrayList<>();
        List<RecoverPartKey> needRecoverParts = new ArrayList<>();
        List<MatrixReport> matrixReports = ProtobufUtil.convertToMatrixReports(matrixReportsProto);
        context.getMatrixMetaManager().syncMatrixInfos(matrixReports, needCreateMatrices, needReleaseMatrices, needRecoverParts, psAttemptId.getPsId());
        size = needCreateMatrices.size();
        for (int i = 0; i < size; i++) {
            resBuilder.addNeedCreateMatrices(ProtobufUtil.convertToMatrixMetaProto(needCreateMatrices.get(i)));
        }
        size = needReleaseMatrices.size();
        for (int i = 0; i < size; i++) {
            resBuilder.addNeedReleaseMatrixIds(needReleaseMatrices.get(i));
        }
        size = needRecoverParts.size();
        for (int i = 0; i < size; i++) {
            resBuilder.addNeedRecoverParts(ProtobufUtil.convert(needRecoverParts.get(i)));
        }
    }
    return resBuilder.build();
}

Example 2 with PSMatricesLoadContext

use of com.tencent.angel.model.PSMatricesLoadContext in project angel by Tencent.

the class ParameterServer method initMatricesData.

private void initMatricesData(final List<MatrixMeta> matrixMetas) throws IOException {
    if (context.getPartReplication() > 1 && context.getPSAttemptId().getIndex() > 0) {
        return;
    }
    // Recover PS from snapshot or load path
    if (context.getPSAttemptId().getIndex() > 0) {
        int matrixNum = matrixMetas.size();
        List<PSMatrixLoadContext> matrixLoadContexts = new ArrayList<>(matrixMetas.size());
        SnapshotRecover recover = new SnapshotRecover(context);
        for (int i = 0; i < matrixNum; i++) {
            // 1. First check old snapshot
            Path inputPath = null;
            try {
                inputPath = recover.getSnapshotPath(matrixMetas.get(i).getId());
            } catch (IOException e) {
                LOG.error("Get snapshot path failed, ", e);
            }
            // 2. Check new checkpoints
            if (inputPath == null) {
                try {
                    List<SaveResult> saveResults = master.getCheckpoints(matrixMetas.get(i).getId());
                    if (saveResults == null || saveResults.isEmpty()) {
                        LOG.info("There is no checkpoint results for matrix " + matrixMetas.get(i).getName());
                    } else {
                        inputPath = new Path(saveResults.get(saveResults.size() - 1).getMatrixPath());
                        LOG.info("There is " + saveResults.size() + " checkpoint results for matrix + " + matrixMetas.get(i).getName() + " we choose the latest result in dir " + saveResults.get(saveResults.size() - 1).getMatrixPath());
                    }
                } catch (ServiceException e) {
                    LOG.error("Get checkpoint results for matrix " + matrixMetas.get(i).getName() + " failed ", e);
                }
            }
            // 3. Check load path setting and old save result
            if (inputPath == null) {
                try {
                    List<SaveResult> saveResults = master.getSaveResult(matrixMetas.get(i).getId());
                    if (saveResults == null || saveResults.isEmpty()) {
                        LOG.info("There is no old save result for matrix " + matrixMetas.get(i).getName());
                    } else {
                        inputPath = new Path(saveResults.get(saveResults.size() - 1).getMatrixPath());
                        LOG.info("There is " + saveResults.size() + " old save results for matrix + " + matrixMetas.get(i).getName() + " we choose the latest result in dir " + saveResults.get(saveResults.size() - 1).getMatrixPath());
                    }
                } catch (ServiceException e) {
                    LOG.error("Get save results for matrix " + matrixMetas.get(i).getName() + " failed ", e);
                }
            }
            if (inputPath != null) {
                LOG.info("Load matrix " + matrixMetas.get(i).getName() + " from " + inputPath.toString());
                matrixLoadContexts.add(new PSMatrixLoadContext(matrixMetas.get(i).getId(), inputPath.toString(), new ArrayList<>(matrixMetas.get(i).getPartitionMetas().keySet()), SnapshotFormat.class.getName()));
            } else {
                // Just init it again
                if (matrixMetas.get(i).getInitFunc() != null) {
                    LOG.info("Matrix " + matrixMetas.get(i) + " has a init function " + matrixMetas.get(i).getInitFunc().getClass().getName() + ", use this function to reinit the matrix");
                    long startTs = System.currentTimeMillis();
                    matrixMetas.get(i).getInitFunc().init(context.getMatrixStorageManager().getMatrix(matrixMetas.get(i).getId()));
                    LOG.info("Reinit the matrix use time " + (System.currentTimeMillis() - startTs));
                }
            }
        }
        if (!matrixLoadContexts.isEmpty()) {
            context.getIOExecutors().load(new PSMatricesLoadContext(-1, -1, matrixLoadContexts));
        }
    }
}