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)

        }


        try {
            m.execute();
        } catch (ConnectionException e) {
            throw new TemporaryStorageException(e);
        }
    }

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                }


                cl.addColumnFamily(cfDef.setCompressionOptions(compressionOptions.build()));
            }
        } catch (ConnectionException e) {
            throw new TemporaryStorageException(e);
        }
    }

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            cl.addKeyspace(ksDef);


            log.debug("Created keyspace {}", keySpaceName);
        } catch (ConnectionException e) {
            log.debug("Failed to create keyspace {}", keySpaceName);
            throw new TemporaryStorageException(e);
        }
    }

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                    .getKey(key.asByteBuffer());
            @SuppressWarnings("unchecked")
            OperationResult<ColumnList<ByteBuffer>> r = rq.withColumnRange(EMPTY, EMPTY, false, 1).execute();
            return 0 < r.getResult().size();
        } catch (ConnectionException e) {
            throw new TemporaryStorageException(e);
        }
    }

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        OperationResult<Rows<ByteBuffer, ByteBuffer>> r;
        try {
            r = (OperationResult<Rows<ByteBuffer, ByteBuffer>>) rq.execute();
        } catch (ConnectionException e) {
            throw new TemporaryStorageException(e);
        }


        return convertResult(r.getResult(), query.getSliceEnd().asByteBuffer(), limit);
    }

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        // Omit final the query's keyend from the result, if present in result
        final Rows<ByteBuffer, ByteBuffer> r;
        try {
            r = ((OperationResult<Rows<ByteBuffer, ByteBuffer>>) rowSlice.execute()).getResult();
        } catch (ConnectionException e) {
            throw new TemporaryStorageException(e);
        }
        Iterator<Row<ByteBuffer, ByteBuffer>> i =
                Iterators.filter(r.iterator(), new KeySkipPredicate(query.getKeyEnd().asByteBuffer()));
        return new RowIterator(i, query);
    }

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     *
     * @throws StorageException shouldn't happen
     */
    @Test
    public void testWriteLockRetriesOnTemporaryStorageException() throws StorageException {
        TemporaryStorageException tse = new TemporaryStorageException("Storage cluster is waking up");


        expect(lockState.has(defaultTx, defaultLockID)).andReturn(false);
        recordSuccessfulLocalLock();
        StaticBuffer firstCol = recordExceptionLockWrite(1, TimeUnit.NANOSECONDS, null, tse);
        LockInfo secondLI = recordSuccessfulLockWrite(1, TimeUnit.NANOSECONDS, firstCol);

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        expect(lockState.getLocksForTx(defaultTx)).andReturn(ImmutableMap.of(defaultLockID, lockStatus));


        expect(times.sleepUntil(lockStatus.getWriteTimestamp(TimeUnit.NANOSECONDS) + defaultWaitNS)).andReturn(currentTimeNS);


        // First getSlice will fail
        TemporaryStorageException tse = new TemporaryStorageException("Storage cluster will be right back");
        recordExceptionalLockGetSlice(tse);


        // Second getSlice will succeed
        recordLockGetSliceAndReturnSingleEntry(new StaticBufferEntry(lockCol, defaultLockVal));

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        expect(lockState.getLocksForTx(defaultTx)).andReturn(ImmutableMap.of(defaultLockID, lockStatus));


        expect(times.sleepUntil(lockStatus.getWriteTimestamp(TimeUnit.NANOSECONDS) + defaultWaitNS)).andReturn(currentTimeNS);


        // Three successive getSlice calls, each throwing a distinct TSE
        recordExceptionalLockGetSlice(new TemporaryStorageException("Storage cluster is having me-time"));
        recordExceptionalLockGetSlice(new TemporaryStorageException("Storage cluster is in a dissociative fugue state"));
        recordExceptionalLockGetSlice(new TemporaryStorageException("Storage cluster has gone to Prague to find itself"));


        ctrl.replay();


        TemporaryStorageException tse = null;
        try {
            locker.checkLocks(defaultTx);
        } catch (TemporaryStorageException e) {
            tse = e;
        }

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        expect(lockState.getLocksForTx(defaultTx)).andReturn(Maps.newLinkedHashMap(ImmutableMap.of(defaultLockID, defaultLS)));


        List<StaticBuffer> dels = ImmutableList.of(codec.toLockCol(defaultLS.getWriteTimestamp(TimeUnit.NANOSECONDS), defaultLockRid));
        expect(times.getApproxNSSinceEpoch()).andReturn(currentTimeNS);
        store.mutate(eq(defaultLockKey), eq(ImmutableList.<Entry>of()), eq(dels), eq(defaultTx));
        expectLastCall().andThrow(new TemporaryStorageException("Storage cluster is backlogged"));
        expect(times.getApproxNSSinceEpoch()).andReturn(currentTimeNS);
        store.mutate(eq(defaultLockKey), eq(ImmutableList.<Entry>of()), eq(dels), eq(defaultTx));
        expect(mediator.unlock(defaultLockID, defaultTx)).andReturn(true);
//        lockState.release(defaultTx, defaultLockID);
        ctrl.replay();

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