Examples with MutationsRejectedException org.apache.accumulo.core.client.MutationsRejectedException used on opensource projects

Example 91 with MutationsRejectedException

use of org.apache.accumulo.core.client.MutationsRejectedException in project accumulo by apache.

the class StatusMaker method deleteStatusRecord.

/**
 * Because there is only one active Manager, and thus one active StatusMaker, the only safe time
 * that we can issue the delete for a Status which is closed is immediately after writing it to
 * the replication table.
 * <p>
 * If we try to defer and delete these entries in another thread/process, we will have no
 * assurance that the Status message was propagated to the replication table. It is easiest, in
 * terms of concurrency, to do this all in one step.
 *
 * @param k
 *          The Key to delete
 */
protected void deleteStatusRecord(Key k) {
    log.debug("Deleting {} from metadata table as it's no longer needed", k.toStringNoTruncate());
    if (metadataWriter == null) {
        try {
            metadataWriter = client.createBatchWriter(sourceTableName);
        } catch (TableNotFoundException e) {
            throw new RuntimeException("Metadata table doesn't exist");
        }
    }
    try {
        Mutation m = new Mutation(k.getRow());
        m.putDelete(k.getColumnFamily(), k.getColumnQualifier());
        metadataWriter.addMutation(m);
        metadataWriter.flush();
    } catch (MutationsRejectedException e) {
        log.warn("Failed to delete status mutations for metadata table, will retry", e);
    }
}