Examples with StandbyException org.apache.hadoop.ipc.StandbyException used on opensource projects

Example 11 with StandbyException

use of org.apache.hadoop.ipc.StandbyException in project hadoop by apache.

the class FSNamesystem method appendFile.

/**
   * Append to an existing file in the namespace.
   */
LastBlockWithStatus appendFile(String srcArg, String holder, String clientMachine, EnumSet<CreateFlag> flag, boolean logRetryCache) throws IOException {
    final String operationName = "append";
    boolean newBlock = flag.contains(CreateFlag.NEW_BLOCK);
    if (newBlock) {
        requireEffectiveLayoutVersionForFeature(Feature.APPEND_NEW_BLOCK);
    }
    NameNode.stateChangeLog.debug("DIR* NameSystem.appendFile: src={}, holder={}, clientMachine={}", srcArg, holder, clientMachine);
    try {
        boolean skipSync = false;
        LastBlockWithStatus lbs = null;
        final FSPermissionChecker pc = getPermissionChecker();
        checkOperation(OperationCategory.WRITE);
        writeLock();
        try {
            checkOperation(OperationCategory.WRITE);
            checkNameNodeSafeMode("Cannot append to file" + srcArg);
            lbs = FSDirAppendOp.appendFile(this, srcArg, pc, holder, clientMachine, newBlock, logRetryCache);
        } catch (StandbyException se) {
            skipSync = true;
            throw se;
        } finally {
            writeUnlock(operationName);
            // They need to be sync'ed even when an exception was thrown.
            if (!skipSync) {
                getEditLog().logSync();
            }
        }
        logAuditEvent(true, operationName, srcArg);
        return lbs;
    } catch (AccessControlException e) {
        logAuditEvent(false, operationName, srcArg);
        throw e;
    }
}