Examples with ApplicationStartData org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationStartData used on opensource projects

Example 1 with ApplicationStartData

use of org.apache.hadoop.yarn.server.applicationhistoryservice.records.ApplicationStartData in project hadoop by apache.

the class FileSystemApplicationHistoryStore method getApplication.

@Override
public ApplicationHistoryData getApplication(ApplicationId appId) throws IOException {
    HistoryFileReader hfReader = getHistoryFileReader(appId);
    try {
        boolean readStartData = false;
        boolean readFinishData = false;
        ApplicationHistoryData historyData = ApplicationHistoryData.newInstance(appId, null, null, null, null, Long.MIN_VALUE, Long.MIN_VALUE, Long.MAX_VALUE, null, FinalApplicationStatus.UNDEFINED, null);
        while ((!readStartData || !readFinishData) && hfReader.hasNext()) {
            HistoryFileReader.Entry entry = hfReader.next();
            if (entry.key.id.equals(appId.toString())) {
                if (entry.key.suffix.equals(START_DATA_SUFFIX)) {
                    ApplicationStartData startData = parseApplicationStartData(entry.value);
                    mergeApplicationHistoryData(historyData, startData);
                    readStartData = true;
                } else if (entry.key.suffix.equals(FINISH_DATA_SUFFIX)) {
                    ApplicationFinishData finishData = parseApplicationFinishData(entry.value);
                    mergeApplicationHistoryData(historyData, finishData);
                    readFinishData = true;
                }
            }
        }
        if (!readStartData && !readFinishData) {
            return null;
        }
        if (!readStartData) {
            LOG.warn("Start information is missing for application " + appId);
        }
        if (!readFinishData) {
            LOG.warn("Finish information is missing for application " + appId);
        }
        LOG.info("Completed reading history information of application " + appId);
        return historyData;
    } catch (IOException e) {
        LOG.error("Error when reading history file of application " + appId, e);
        throw e;
    } finally {
        hfReader.close();
    }
}