timeMaster.advanceCurrentTimeMillis(1000);
StorableCreationMetadata metadata2 = new StorableCreationMetadata(null,
calcChecksum32(DATA_REPLACE), HashConstants.NO_CHECKSUM);
metadata.uncompressedSize = -1L;
resp = store.upsertConditionally(StoreOperationSource.REQUEST, null,
KEY1, new ByteArrayInputStream(DATA_REPLACE),
metadata2, ByteContainer.simple(CUSTOM_METADATA_REPLACE),
true, checker);
_verifyCounts(1L, store);