Since you didn't show all the queries you used, I made an assumption that
you've inserted other data. Where is the query that inserted a="v"? I
don't know how to answer the question if you're not actually showing how to
reproduce the problem.
On Tue, Jul 18, 2017 at 12:24 PM Nitan Kainth <ni...@bamlabs.com> wrote:
> Jonathan,
>
> Please notice last rows with partition key values (w,v and t). they were
> inserted same way and has write time values
>
> On Jul 18, 2017, at 2:22 PM, Jonathan Haddad <j...@jonhaddad.com> wrote:
>
> This looks like expected behavior to me. You aren't inserting a value for
> b. Since there's no value, there's also no writetime.
>
> On Tue, Jul 18, 2017 at 12:15 PM Nitan Kainth <ni...@bamlabs.com> wrote:
>
>> Hi,
>>
>> We see that null columns have writetime(column) populated for few columns
>> and shows null for few other. Is it any bug or something else?
>>
>>
>> CREATE KEYSPACE test WITH replication = {'class':
>> 'NetworkTopologyStrategy', 'us-east': '2'} AND durable_writes = true;
>>
>> CREATE TABLE test.t (
>> a text PRIMARY KEY,
>> b text
>> ) 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’;
>>
>> insert into test.t (a ) values ('z’);
>> insert into test.t (a ) values ('w’);
>> insert into test.t (a ) values ('e’);
>> insert into test.t (a ) values ('r’);
>> insert into test.t (a ) values ('t’);
>>
>> select a,b, writetime (b) from test.t ;
>>
>> *a* | *b* | *writetime(b)*
>> ---+------+------------------
>> *z* | *null* | *null*
>> *a* | *null* | *null*
>> *c* | *null* | *null*
>> *e* | *null* | *null*
>> *r* | *null* | *null*
>> *d* | *null* | *1500400745074499*
>> *w* | *null* | *1500400745074499*
>> *v* | *null* | *1500400745074499*
>> *t* | *null* | *1500400745074499*
>> *x* | *y* | *1500400626266371*
>>
>
>
