Examples with ConstraintException org.apache.hadoop.hbase.constraint.ConstraintException used on opensource projects

Example 1 with ConstraintException

use of org.apache.hadoop.hbase.constraint.ConstraintException in project hbase by apache.

the class RSGroupAdminServer method removeRSGroup.

@Override
public void removeRSGroup(String name) throws IOException {
    // another writer changing our state while we are working.
    synchronized (rsGroupInfoManager) {
        if (master.getMasterCoprocessorHost() != null) {
            master.getMasterCoprocessorHost().preRemoveRSGroup(name);
        }
        RSGroupInfo rsGroupInfo = rsGroupInfoManager.getRSGroup(name);
        if (rsGroupInfo == null) {
            throw new ConstraintException("RSGroup " + name + " does not exist");
        }
        int tableCount = rsGroupInfo.getTables().size();
        if (tableCount > 0) {
            throw new ConstraintException("RSGroup " + name + " has " + tableCount + " tables; you must remove these tables from the rsgroup before " + "the rsgroup can be removed.");
        }
        int serverCount = rsGroupInfo.getServers().size();
        if (serverCount > 0) {
            throw new ConstraintException("RSGroup " + name + " has " + serverCount + " servers; you must remove these servers from the RSGroup before" + "the RSGroup can be removed.");
        }
        for (NamespaceDescriptor ns : master.getClusterSchema().getNamespaces()) {
            String nsGroup = ns.getConfigurationValue(rsGroupInfo.NAMESPACE_DESC_PROP_GROUP);
            if (nsGroup != null && nsGroup.equals(name)) {
                throw new ConstraintException("RSGroup " + name + " is referenced by namespace: " + ns.getName());
            }
        }
        rsGroupInfoManager.removeRSGroup(name);
        if (master.getMasterCoprocessorHost() != null) {
            master.getMasterCoprocessorHost().postRemoveRSGroup(name);
        }
    }
}

Example 2 with ConstraintException

use of org.apache.hadoop.hbase.constraint.ConstraintException in project hbase by apache.

the class DeleteNamespaceProcedure method prepareDelete.

/**
   * Action before any real action of deleting namespace.
   * @param env MasterProcedureEnv
   * @throws IOException
   */
private void prepareDelete(final MasterProcedureEnv env) throws IOException {
    if (getTableNamespaceManager(env).doesNamespaceExist(namespaceName) == false) {
        throw new NamespaceNotFoundException(namespaceName);
    }
    if (NamespaceDescriptor.RESERVED_NAMESPACES.contains(namespaceName)) {
        throw new ConstraintException("Reserved namespace " + namespaceName + " cannot be removed.");
    }
    int tableCount = 0;
    try {
        tableCount = env.getMasterServices().listTableDescriptorsByNamespace(namespaceName).size();
    } catch (FileNotFoundException fnfe) {
        throw new NamespaceNotFoundException(namespaceName);
    }
    if (tableCount > 0) {
        throw new ConstraintException("Only empty namespaces can be removed. " + "Namespace " + namespaceName + " has " + tableCount + " tables");
    }
    // This is used for rollback
    nsDescriptor = getTableNamespaceManager(env).get(namespaceName);
}

Example 3 with ConstraintException

use of org.apache.hadoop.hbase.constraint.ConstraintException in project hbase by apache.

the class DisableTableProcedure method prepareDisable.

/**
   * Action before any real action of disabling table. Set the exception in the procedure instead
   * of throwing it.  This approach is to deal with backward compatible with 1.0.
   * @param env MasterProcedureEnv
   * @throws IOException
   */
private boolean prepareDisable(final MasterProcedureEnv env) throws IOException {
    boolean canTableBeDisabled = true;
    if (tableName.equals(TableName.META_TABLE_NAME)) {
        setFailure("master-disable-table", new ConstraintException("Cannot disable catalog table"));
        canTableBeDisabled = false;
    } else if (!MetaTableAccessor.tableExists(env.getMasterServices().getConnection(), tableName)) {
        setFailure("master-disable-table", new TableNotFoundException(tableName));
        canTableBeDisabled = false;
    } else if (!skipTableStateCheck) {
        // There could be multiple client requests trying to disable or enable
        // the table at the same time. Ensure only the first request is honored
        // After that, no other requests can be accepted until the table reaches
        // DISABLED or ENABLED.
        //
        // Note: in 1.0 release, we called TableStateManager.setTableStateIfInStates() to set
        // the state to DISABLING from ENABLED. The implementation was done before table lock
        // was implemented. With table lock, there is no need to set the state here (it will
        // set the state later on). A quick state check should be enough for us to move forward.
        TableStateManager tsm = env.getMasterServices().getTableStateManager();
        TableState.State state = tsm.getTableState(tableName);
        if (!state.equals(TableState.State.ENABLED)) {
            LOG.info("Table " + tableName + " isn't enabled;is " + state.name() + "; skipping disable");
            setFailure("master-disable-table", new TableNotEnabledException(tableName + " state is " + state.name()));
            canTableBeDisabled = false;
        }
    }
    // We are done the check. Future actions in this procedure could be done asynchronously.
    releaseSyncLatch();
    return canTableBeDisabled;
}

Example 4 with ConstraintException

use of org.apache.hadoop.hbase.constraint.ConstraintException in project hbase by apache.

the class TestDeleteNamespaceProcedure method testDeleteNonEmptyNamespace.

@Test(timeout = 60000)
public void testDeleteNonEmptyNamespace() throws Exception {
    final String namespaceName = "testDeleteNonExistNamespace";
    final TableName tableName = TableName.valueOf("testDeleteNonExistNamespace:" + name.getMethodName());
    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
    // create namespace
    createNamespaceForTesting(namespaceName);
    // create the table under the new namespace
    MasterProcedureTestingUtility.createTable(procExec, tableName, null, "f1");
    long procId = procExec.submitProcedure(new DeleteNamespaceProcedure(procExec.getEnvironment(), namespaceName));
    // Wait the completion
    ProcedureTestingUtility.waitProcedure(procExec, procId);
    ProcedureInfo result = procExec.getResult(procId);
    assertTrue(result.isFailed());
    LOG.debug("Delete namespace failed with exception: " + result.getExceptionFullMessage());
    assertTrue(ProcedureTestingUtility.getExceptionCause(result) instanceof ConstraintException);
}

Example 5 with ConstraintException

use of org.apache.hadoop.hbase.constraint.ConstraintException in project hbase by apache.

the class TestDeleteNamespaceProcedure method testDeleteSystemNamespace.

@Test(timeout = 60000)
public void testDeleteSystemNamespace() throws Exception {
    final String namespaceName = NamespaceDescriptor.SYSTEM_NAMESPACE.getName();
    final ProcedureExecutor<MasterProcedureEnv> procExec = getMasterProcedureExecutor();
    long procId = procExec.submitProcedure(new DeleteNamespaceProcedure(procExec.getEnvironment(), namespaceName));
    // Wait the completion
    ProcedureTestingUtility.waitProcedure(procExec, procId);
    ProcedureInfo result = procExec.getResult(procId);
    assertTrue(result.isFailed());
    LOG.debug("Delete namespace failed with exception: " + result.getExceptionFullMessage());
    assertTrue(ProcedureTestingUtility.getExceptionCause(result) instanceof ConstraintException);
}