Empty snapshot created

[Mradul Maheshwari]

Hi,
I am facing an issue when taking snapshots.

The details of the setup are as follows

   1. Cassandra Version 3.5
   2. I have a keyspace named *other_map* with '*NetworkTopologyStrategy*'
   and replication factor 1 for 'dc1'
   3. Added another datacenter 'dc2' in the existing cluster
   4. Modified  other_map keyspace using the *ALTER* command.
   5. After this Logged on on the node on dc2 datacenter and issued
the *nodetool
   snapshot* command for the other_map keyspace.
   6. As a result a directory is created in the other_keyspace/<table
   name>/snapshot/<time-stamp>. This contains only a manifest,json file which
   has no information about any files.

<cat content of manifest.json>
*cat
data/data/other_map/country-f34a28d02b1511e689afc7a4a4b2ee40/snapshots/1465457086678/manifest.json*

*{"files":[]}*

</cat content of manifest.json>

Am I missing any thing here? Are the above mentioned steps complete?

After altering the keyspace I have tried a *nodetool repair* command which
had also not changed anything.

Regards,
Mradul


Information about schema follows

CREATE KEYSPACE other_map WITH replication = {'class':
'NetworkTopologyStrategy', 'dc': '1', 'dc2': '2'}  AND durable_writes =
true;

CREATE TABLE other_map.country (
    id int PRIMARY KEY,
    name text,
    states int
) WITH bloom_filter_fp_chance = 0.01
    AND caching = {'keys': 'ALL', 'rows_per_partition': 'NONE'}
    AND comment = ''
    AND compaction = {'class':
'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy',
'max_threshold': '32', 'min_threshold': '4'}
    AND compression = {'chunk_length_in_kb': '64', 'class':
'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND crc_check_chance = 1.0
    AND dclocal_read_repair_chance = 0.1
    AND default_time_to_live = 0
    AND gc_grace_seconds = 864000
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair_chance = 0.0
    AND speculative_retry = '99PERCENTILE';