Examples of com.thinkaurelius.titan.diskstorage.TemporaryStorageException

Package com.thinkaurelius.titan.diskstorage

Examples of com.thinkaurelius.titan.diskstorage.TemporaryStorageException

com.thinkaurelius.titan.diskstorage.TemporaryStorageException
This exception signifies a (potentially) temporary exception in a Titan storage backend, that is, an exception that is due to a temporary unavailability or other exception that is not permanent in nature.
If this exception is thrown it indicates that retrying the same operation might potentially lead to success (but not necessarily)
@author Matthias Broecheler (me@matthiasb.com)

            if (!adm.tableExists(tableName)) {
                logger.debug("clearStorage() called before table {} was created, skipping.", tableName);
                return;
            }
        } catch (IOException e) {
            throw new TemporaryStorageException(e);
        }


        HTable table = null;


        try {
            table = new HTable(hconf, tableName);


            Scan scan = new Scan();
            scan.setBatch(100);
            scan.setCacheBlocks(false);
            scan.setCaching(2000);


            ResultScanner scanner = null;


            try {
                scanner = table.getScanner(scan);


                for (Result res : scanner) {
                    table.delete(new Delete(res.getRow()));
                }
            } finally {
                IOUtils.closeQuietly(scanner);
            }
        } catch (IOException e) {
            throw new TemporaryStorageException(e);
        } finally {
            IOUtils.closeQuietly(table);
        }
    }

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        //Delay artificially
        if (delayAcquisitionMS>0) {
            try {
                Thread.sleep(delayAcquisitionMS);
            } catch (InterruptedException e) {
                throw new TemporaryStorageException(e);
            }
        }
        Integer p = Integer.valueOf(partition);
        long size = blockSizer.getBlockSize(partition);
        AtomicLong id = ids.get(p);

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        CTConnection conn = null;
        try {
            conn = pool.borrowObject(SYSTEM_KS);
            return FBUtilities.newPartitioner(conn.getClient().describe_partitioner());
        } catch (Exception e) {
            throw new TemporaryStorageException(e);
        } finally {
            pool.returnObjectUnsafe(SYSTEM_KS, conn);
        }
    }

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             * Clearing the CTConnectionPool is unnecessary. This method
             * removes no keyspaces. All open Cassandra connections will
             * remain valid.
             */
        } catch (Exception e) {
            throw new TemporaryStorageException(e);
        } finally {
            if (conn != null && conn.getClient() != null) {
                try {
                    conn.getClient().set_keyspace(SYSTEM_KS);
                } catch (InvalidRequestException e) {

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            }


            return client.describe_keyspace(keyspaceName);
        } catch (Exception e) {
            throw new TemporaryStorageException(e);
        } finally {
            pool.returnObjectUnsafe(SYSTEM_KS, connection);
        }
    }

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                createColumnFamily(client, ksName, cfName, comparator);
            } else {
                log.debug("Keyspace {} and ColumnFamily {} were found.", ksName, cfName);
            }
        } catch (SchemaDisagreementException e) {
            throw new TemporaryStorageException(e);
        } catch (Exception e) {
            throw new PermanentStorageException(e);
        } finally {
            pool.returnObjectUnsafe(ksName, conn);
        }

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        log.debug("Adding column family {} to keyspace {}...", cfName, ksName);
        try {
            client.system_add_column_family(createColumnFamily);
        } catch (SchemaDisagreementException e) {
            throw new TemporaryStorageException("Error in setting up column family", e);
        } catch (Exception e) {
            throw new PermanentStorageException(e);
        }


        log.debug("Added column family {} to keyspace {}.", cfName, ksName);

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            return result;
        } catch (InvalidRequestException e) {
            log.debug("Keyspace {} does not exist", keySpaceName);
            return null;
        } catch (Exception e) {
            throw new TemporaryStorageException(e);
        } finally {
            pool.returnObjectUnsafe(keySpaceName, conn);
        }
    }

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        }
    }


    private StorageException convert(Exception esException) {
        if (esException instanceof ElasticSearchInterruptedException) {
            return new TemporaryStorageException("Interrupted while waiting for response", esException);
        } else {
            return new PermanentStorageException("Unknown exception while executing index operation", esException);
        }
    }

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    public IPartitioner<? extends Token<?>> getCassandraPartitioner() throws StorageException {
        Cluster cl = clusterContext.getClient();
        try {
            return FBUtilities.newPartitioner(cl.describePartitioner());
        } catch (ConnectionException e) {
            throw new TemporaryStorageException(e);
        } catch (ConfigurationException e) {
            throw new PermanentStorageException(e);
        }
    }

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