How to use

dropRowRangeAsync

method

in

com.google.cloud.bigtable.grpc.BigtableTableAdminClient

/**
 * Permanently deletes all rows in a range.
 *
 * @param request a {@link DropRowRangeRequest} object.
 * @return a {@link CompletableFuture} that returns {@link Empty} object.
 */
public CompletableFuture<Empty> dropRowRangeAsync(DropRowRangeRequest request) {
 return toCompletableFuture(adminClient.dropRowRangeAsync(request));
}

/** {@inheritDoc} */
@Override
public ListenableFuture<Void> dropRowRangeAsync(String tableId, String rowKeyPrefix) {
 return Futures.transform(
   adminClient.dropRowRangeAsync(buildDropRowRangeRequest(tableId, rowKeyPrefix)),
   new Function<Empty, Void>() {
    @Override
    public Void apply(Empty empty) {
     return null;
    }
   }, MoreExecutors.directExecutor());
}

/**
 * Permanently deletes all rows in a range.
 *
 * @param request a {@link DropRowRangeRequest} object.
 * @return a {@link CompletableFuture} that returns {@link Empty} object.
 */
public CompletableFuture<Empty> dropRowRangeAsync(DropRowRangeRequest request) {
 return toCompletableFuture(adminClient.dropRowRangeAsync(request));
}

@Override
public Future<Void> truncateTableAsync(TableName tableName, boolean preserveSplits) throws IOException {
 if (!preserveSplits) {
  LOG.info("truncate will preserveSplits. The passed in variable is ignored.");
 }
 DropRowRangeRequest.Builder deleteRequest = DropRowRangeRequest.newBuilder().setDeleteAllDataFromTable(true);
 return FutureUtils.toCompletableFuture(
   bigtableTableAdminClient
    .dropRowRangeAsync(deleteRequest.setName(toBigtableName(tableName)).build()))
   .thenApply(r -> null);
}
/* ******* Unsupported methods *********** */