Examples with PrepareStatus org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.PrepareStatusResponse.PrepareStatus used on opensource projects

Example 1 with PrepareStatus

use of org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.PrepareStatusResponse.PrepareStatus in project ozone by apache.

the class PrepareSubCommand method call.

@Override
public Void call() throws Exception {
    OzoneManagerProtocol client = parent.createOmClient(omServiceId);
    long prepareTxnId = client.prepareOzoneManager(txnApplyWaitTimeSeconds, txnApplyCheckIntervalSeconds);
    System.out.println("Ozone Manager Prepare Request successfully returned " + "with Transaction Id : [" + prepareTxnId + "].");
    Map<String, Boolean> omPreparedStatusMap = new HashMap<>();
    Set<String> omHosts = getOmHostsFromConfig(parent.getParent().getOzoneConf(), omServiceId);
    omHosts.forEach(h -> omPreparedStatusMap.put(h, false));
    Duration pTimeout = Duration.of(prepareTimeOut, ChronoUnit.SECONDS);
    Duration pInterval = Duration.of(prepareCheckInterval, ChronoUnit.SECONDS);
    System.out.println();
    System.out.println("Checking individual OM instances for prepare request " + "completion...");
    long endTime = System.currentTimeMillis() + pTimeout.toMillis();
    int expectedNumPreparedOms = omPreparedStatusMap.size();
    int currentNumPreparedOms = 0;
    while (System.currentTimeMillis() < endTime && currentNumPreparedOms < expectedNumPreparedOms) {
        for (Map.Entry<String, Boolean> e : omPreparedStatusMap.entrySet()) {
            if (!e.getValue()) {
                String omHost = e.getKey();
                try (OzoneManagerProtocol singleOmClient = parent.createOmClient(omServiceId, omHost, false)) {
                    PrepareStatusResponse response = singleOmClient.getOzoneManagerPrepareStatus(prepareTxnId);
                    PrepareStatus status = response.getStatus();
                    System.out.println("OM : [" + omHost + "], Prepare " + "Status : [" + status.name() + "], Current Transaction Id : [" + response.getCurrentTxnIndex() + "]");
                    if (status.equals(PREPARE_COMPLETED)) {
                        e.setValue(true);
                        currentNumPreparedOms++;
                    }
                } catch (IOException ioEx) {
                    System.out.println("Exception while checking preparation " + "completeness for [" + omHost + "], Error : [" + ioEx.getMessage() + "]");
                }
            }
        }
        if (currentNumPreparedOms < expectedNumPreparedOms) {
            System.out.println("Waiting for " + prepareCheckInterval + " seconds before retrying...");
            Thread.sleep(pInterval.toMillis());
        }
    }
    if (currentNumPreparedOms < (expectedNumPreparedOms + 1) / 2) {
        throw new Exception("OM Preparation failed since a majority OMs are not" + " prepared yet.");
    } else {
        System.out.println();
        System.out.println("OM Preparation successful! ");
        if (currentNumPreparedOms == expectedNumPreparedOms) {
            System.out.println("All OMs are prepared");
        } else {
            System.out.println("A majority of OMs are prepared. OMs that are not " + "prepared : " + omPreparedStatusMap.entrySet().stream().filter(e -> !e.getValue()).map(e -> e.getKey()).collect(Collectors.joining()));
        }
        System.out.println("No new write requests will be allowed until " + "preparation is cancelled or upgrade/downgrade is done.");
    }
    return null;
}