use of org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.PrepareStatusResponse.PrepareStatus.PREPARE_COMPLETED 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;
}
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