Examples with AdHocLogDumper org.apache.hadoop.yarn.util.AdHocLogDumper used on opensource projects

Example 1 with AdHocLogDumper

use of org.apache.hadoop.yarn.util.AdHocLogDumper in project hadoop by apache.

the class RMWebServices method dumpSchedulerLogs.

@POST
@Path("/scheduler/logs")
@Produces({ MediaType.APPLICATION_JSON + "; " + JettyUtils.UTF_8, MediaType.APPLICATION_XML + "; " + JettyUtils.UTF_8 })
public String dumpSchedulerLogs(@FormParam("time") String time, @Context HttpServletRequest hsr) throws IOException {
    init();
    UserGroupInformation callerUGI = getCallerUserGroupInformation(hsr, true);
    ApplicationACLsManager aclsManager = rm.getApplicationACLsManager();
    if (aclsManager.areACLsEnabled()) {
        if (callerUGI == null || !aclsManager.isAdmin(callerUGI)) {
            String msg = "Only admins can carry out this operation.";
            throw new ForbiddenException(msg);
        }
    }
    ResourceScheduler rs = rm.getResourceScheduler();
    int period = Integer.parseInt(time);
    if (period <= 0) {
        throw new BadRequestException("Period must be greater than 0");
    }
    final String logHierarchy = "org.apache.hadoop.yarn.server.resourcemanager.scheduler";
    String logfile = "yarn-scheduler-debug.log";
    if (rs instanceof CapacityScheduler) {
        logfile = "yarn-capacity-scheduler-debug.log";
    } else if (rs instanceof FairScheduler) {
        logfile = "yarn-fair-scheduler-debug.log";
    }
    AdHocLogDumper dumper = new AdHocLogDumper(logHierarchy, logfile);
    // time period is sent to us in seconds
    dumper.dumpLogs("DEBUG", period * 1000);
    return "Capacity scheduler logs are being created.";
}