Hi,
As it is a single partition key, try to update the key with only partition
key instead of passing other columns. And try to set consistency level ONE.
Cheers,
Goutham.
On Fri, Jul 20, 2018 at 6:57 AM learner dba <cassandra...@yahoo.com.invalid>
wrote:
> Anybody has any ideas about this? This is happening in production and we
> really need to fix it.
>
> On Thursday, July 19, 2018, 10:41:59 AM CDT, learner dba
> <cassandra...@yahoo.com.INVALID> wrote:
>
>
> Our foreignid is unique idetifier and we did check for wide partitions;
> cfhistorgrams show all partitions are evenly sized:
>
> Percentile SSTables Write Latency Read Latency Partition Size
> Cell Count
>
> (micros) (micros) (bytes)
>
>
> 50% 0.00 29.52 0.00 1916
> 12
>
> 75% 0.00 42.51 0.00 2299
> 12
>
> 95% 0.00 61.21 0.00 2759
> 14
>
> 98% 0.00 73.46 0.00 2759
> 17
>
> 99% 0.00 88.15 0.00 2759
> 17
>
> Min 0.00 9.89 0.00 150
> 2
>
> Max 0.00 88.15 0.00 7007506
> 42510
> any thing else that we can check?
>
> On Wednesday, July 18, 2018, 10:44:29 PM CDT, wxn...@zjqunshuo.com <
> wxn...@zjqunshuo.com> wrote:
>
>
> Your partition key is foreignid. You may have a large partition. Why not
> use foreignid+timebucket as partition key?
>
>
> *From:* learner dba <cassandra...@yahoo.com.INVALID>
> *Date:* 2018-07-19 01:48
> *To:* User cassandra.apache.org <user@cassandra.apache.org>
> *Subject:* Timeout for only one keyspace in cluster
> Hi,
>
> We have a cluster with multiple keyspaces. All queries are performing good
> but write operation on few tables in one specific keyspace gets write
> timeout. Table has counter column and counter update query times out
> always. Any idea?
>
> CREATE TABLE x.y (
>
> foreignid uuid,
>
> timebucket text,
>
> key text,
>
> timevalue int,
>
> value counter,
>
> PRIMARY KEY (foreignid, timebucket, key, timevalue)
>
> ) WITH CLUSTERING ORDER BY (timebucket ASC, key ASC, timevalue ASC)
>
> AND 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';
>
> Query and Error:
>
> UPDATE x.y SET value = value + 1 where foreignid = ? AND timebucket = ? AND
> key = ? AND timevalue = ?, err = &errors.errorString{s:\"gocql: no response
> received from cassandra within timeout period
>
>
> I verified CL=local_serial
>
> We had been working on this issue for many days; any help will be much
> appreciated.
>
>
>
> --
Regards
Goutham Reddy
