Examples with Delete org.apache.hadoop.hbase.client.Delete used on opensource projects

Example 1 with Delete

use of org.apache.hadoop.hbase.client.Delete in project camel by apache.

the class HBaseProducer method process.

public void process(Exchange exchange) throws Exception {
    try (Table table = endpoint.getTable()) {
        updateHeaders(exchange);
        String operation = (String) exchange.getIn().getHeader(HBaseConstants.OPERATION);
        Integer maxScanResult = exchange.getIn().getHeader(HBaseConstants.HBASE_MAX_SCAN_RESULTS, Integer.class);
        String fromRowId = (String) exchange.getIn().getHeader(HBaseConstants.FROM_ROW);
        String stopRowId = (String) exchange.getIn().getHeader(HBaseConstants.STOP_ROW);
        CellMappingStrategy mappingStrategy = endpoint.getCellMappingStrategyFactory().getStrategy(exchange.getIn());
        HBaseData data = mappingStrategy.resolveModel(exchange.getIn());
        List<Put> putOperations = new LinkedList<>();
        List<Delete> deleteOperations = new LinkedList<>();
        List<HBaseRow> getOperationResult = new LinkedList<>();
        List<HBaseRow> scanOperationResult = new LinkedList<>();
        for (HBaseRow hRow : data.getRows()) {
            hRow.apply(rowModel);
            if (HBaseConstants.PUT.equals(operation)) {
                putOperations.add(createPut(hRow));
            } else if (HBaseConstants.GET.equals(operation)) {
                HBaseRow getResultRow = getCells(table, hRow);
                getOperationResult.add(getResultRow);
            } else if (HBaseConstants.DELETE.equals(operation)) {
                deleteOperations.add(createDeleteRow(hRow));
            } else if (HBaseConstants.SCAN.equals(operation)) {
                scanOperationResult = scanCells(table, hRow, fromRowId, stopRowId, maxScanResult, endpoint.getFilters());
            }
        }
        //Check if we have something to add.
        if (!putOperations.isEmpty()) {
            table.put(putOperations);
        } else if (!deleteOperations.isEmpty()) {
            table.delete(deleteOperations);
        } else if (!getOperationResult.isEmpty()) {
            mappingStrategy.applyGetResults(exchange.getOut(), new HBaseData(getOperationResult));
        } else if (!scanOperationResult.isEmpty()) {
            mappingStrategy.applyScanResults(exchange.getOut(), new HBaseData(scanOperationResult));
        }
    }
}

Example 2 with Delete

use of org.apache.hadoop.hbase.client.Delete in project camel by apache.

the class HBaseIdempotentRepository method remove.

@Override
public boolean remove(Object o) {
    try {
        byte[] b = HBaseHelper.toBytes(o);
        if (table.exists(new Get(b))) {
            Delete delete = new Delete(b);
            table.delete(delete);
            return true;
        } else {
            return false;
        }
    } catch (Exception e) {
        LOG.warn("Error removing object {} from HBase repository.", o);
        return false;
    }
}

Example 3 with Delete

use of org.apache.hadoop.hbase.client.Delete in project hbase by apache.

the class MetaTableAccessor method multiMutate.

/**
   * Performs an atomic multi-mutate operation against the given table.
   */
// Used by the RSGroup Coprocessor Endpoint. It had a copy/paste of the below. Need to reveal
// this facility for CPEP use or at least those CPEPs that are on their way to becoming part of
// core as is the intent for RSGroup eventually.
public static void multiMutate(Connection connection, final Table table, byte[] row, final List<Mutation> mutations) throws IOException {
    if (METALOG.isDebugEnabled()) {
        METALOG.debug(mutationsToString(mutations));
    }
    // TODO: Need rollback!!!!
    // TODO: Need Retry!!!
    // TODO: What for a timeout? Default write timeout? GET FROM HTABLE?
    // TODO: Review when we come through with ProcedureV2.
    RegionServerCallable<MutateRowsResponse, MultiRowMutationProtos.MultiRowMutationService.BlockingInterface> callable = new RegionServerCallable<MutateRowsResponse, MultiRowMutationProtos.MultiRowMutationService.BlockingInterface>(connection, table.getName(), row, null) {

        /*RpcController not used in this CPEP!*/
        @Override
        protected MutateRowsResponse rpcCall() throws Exception {
            final MutateRowsRequest.Builder builder = MutateRowsRequest.newBuilder();
            for (Mutation mutation : mutations) {
                if (mutation instanceof Put) {
                    builder.addMutationRequest(ProtobufUtil.toMutation(ClientProtos.MutationProto.MutationType.PUT, mutation));
                } else if (mutation instanceof Delete) {
                    builder.addMutationRequest(ProtobufUtil.toMutation(ClientProtos.MutationProto.MutationType.DELETE, mutation));
                } else {
                    throw new DoNotRetryIOException("multi in MetaEditor doesn't support " + mutation.getClass().getName());
                }
            }
            // The call to #prepare that ran before this invocation will have populated HRegionLocation.
            HRegionLocation hrl = getLocation();
            RegionSpecifier region = ProtobufUtil.buildRegionSpecifier(RegionSpecifierType.REGION_NAME, hrl.getRegionInfo().getRegionName());
            builder.setRegion(region);
            // that makes com.google.protobuf.RpcController and then copy into it configs.
            return getStub().mutateRows(null, builder.build());
        }

        @Override
        protected // Called on the end of the super.prepare call. Set the stub.
        void setStubByServiceName(ServerName serviceName) throws /*Ignored*/
        IOException {
            CoprocessorRpcChannel channel = table.coprocessorService(getRow());
            setStub(MultiRowMutationProtos.MultiRowMutationService.newBlockingStub(channel));
        }
    };
    int writeTimeout = connection.getConfiguration().getInt(HConstants.HBASE_RPC_WRITE_TIMEOUT_KEY, connection.getConfiguration().getInt(HConstants.HBASE_RPC_TIMEOUT_KEY, HConstants.DEFAULT_HBASE_RPC_TIMEOUT));
    // The region location should be cached in connection. Call prepare so this callable picks
    // up the region location (see super.prepare method).
    callable.prepare(false);
    callable.call(writeTimeout);
}

Example 4 with Delete

use of org.apache.hadoop.hbase.client.Delete in project hbase by apache.

the class MetaTableAccessor method removeRegionReplicasFromMeta.

/**
   * Deletes some replica columns corresponding to replicas for the passed rows
   * @param metaRows rows in hbase:meta
   * @param replicaIndexToDeleteFrom the replica ID we would start deleting from
   * @param numReplicasToRemove how many replicas to remove
   * @param connection connection we're using to access meta table
   * @throws IOException
   */
public static void removeRegionReplicasFromMeta(Set<byte[]> metaRows, int replicaIndexToDeleteFrom, int numReplicasToRemove, Connection connection) throws IOException {
    int absoluteIndex = replicaIndexToDeleteFrom + numReplicasToRemove;
    for (byte[] row : metaRows) {
        long now = EnvironmentEdgeManager.currentTime();
        Delete deleteReplicaLocations = new Delete(row);
        for (int i = replicaIndexToDeleteFrom; i < absoluteIndex; i++) {
            deleteReplicaLocations.addColumns(getCatalogFamily(), getServerColumn(i), now);
            deleteReplicaLocations.addColumns(getCatalogFamily(), getSeqNumColumn(i), now);
            deleteReplicaLocations.addColumns(getCatalogFamily(), getStartCodeColumn(i), now);
        }
        deleteFromMetaTable(connection, deleteReplicaLocations);
    }
}

Example 5 with Delete

use of org.apache.hadoop.hbase.client.Delete in project hbase by apache.

the class MetaTableAccessor method deleteTableState.

/**
   * Remove state for table from meta
   * @param connection to use for deletion
   * @param table to delete state for
   */
public static void deleteTableState(Connection connection, TableName table) throws IOException {
    long time = EnvironmentEdgeManager.currentTime();
    Delete delete = new Delete(table.getName());
    delete.addColumns(getTableFamily(), getStateColumn(), time);
    deleteFromMetaTable(connection, delete);
    LOG.info("Deleted table " + table + " state from META");
}