Did not see any exception in cassandra.log and system.log. Monitored using
JConsole. Did not see anything wrong. Do I need to see any specific info? Doing
almost 1000 writes/sec.
HBase and Cassandra are running on different clusters. For cassandra I have 6
nodes with 64GB RAM(Heap is at default setting) and 32 cores.
On 01-Apr-2015, at 8:43 pm, Eric R Medley <emed...@xylocore.com> wrote:
> Are you seeing any exceptions in the cassandra logs? What are the loads on
> your servers? Have you monitored the performance of those servers? How many
> writes are you performing at a time? How many writes per seconds?
>
> Regards,
>
> Eric R Medley
>
>> On Apr 1, 2015, at 9:40 AM, Amlan Roy <amlan....@cleartrip.com> wrote:
>>
>> Write consistency level is ONE.
>>
>> This is the describe output for one of the tables.
>>
>> CREATE TABLE event_data (
>> event text,
>> week text,
>> bucket int,
>> date timestamp,
>> unique text,
>> adt int,
>> age list<int>,
>> arrival list<timestamp>,
>> bank text,
>> bf double,
>> cabin text,
>> card text,
>> carrier list<text>,
>> cb double,
>> channel text,
>> chd int,
>> company text,
>> cookie text,
>> coupon list<text>,
>> depart list<timestamp>,
>> dest list<text>,
>> device text,
>> dis double,
>> domain text,
>> duration bigint,
>> emi int,
>> expressway boolean,
>> flight list<text>,
>> freq_flyer list<text>,
>> host text,
>> host_ip text,
>> inf int,
>> instance text,
>> insurance text,
>> intl boolean,
>> itinerary text,
>> journey text,
>> meal_pref list<text>,
>> mkp double,
>> name list<text>,
>> origin list<text>,
>> pax_type list<text>,
>> payment text,
>> pref_carrier list<text>,
>> referrer text,
>> result_cnt int,
>> search text,
>> src text,
>> src_ip text,
>> stops int,
>> supplier list<text>,
>> tags list<text>,
>> total double,
>> trip text,
>> user text,
>> user_agent text,
>> PRIMARY KEY ((event, week, bucket), date, unique)
>> ) WITH CLUSTERING ORDER BY (date DESC, unique ASC) AND
>> bloom_filter_fp_chance=0.010000 AND
>> caching='KEYS_ONLY' AND
>> comment='' AND
>> dclocal_read_repair_chance=0.100000 AND
>> gc_grace_seconds=864000 AND
>> index_interval=128 AND
>> read_repair_chance=0.000000 AND
>> replicate_on_write='true' AND
>> populate_io_cache_on_flush='false' AND
>> default_time_to_live=0 AND
>> speculative_retry='99.0PERCENTILE' AND
>> memtable_flush_period_in_ms=0 AND
>> compaction={'class': 'SizeTieredCompactionStrategy'} AND
>> compression={'sstable_compression': 'LZ4Compressor’};
>>
>>
>> On 01-Apr-2015, at 8:00 pm, Eric R Medley <emed...@xylocore.com> wrote:
>>
>>> Also, can you provide the table details and the consistency level you are
>>> using?
>>>
>>> Regards,
>>>
>>> Eric R Medley
>>>
>>>> On Apr 1, 2015, at 9:13 AM, Eric R Medley <emed...@xylocore.com> wrote:
>>>>
>>>> Amlan,
>>>>
>>>> Can you provide information on how much data is being written? Are any of
>>>> the columns really large? Are any writes succeeding or are all timing out?
>>>>
>>>> Regards,
>>>>
>>>> Eric R Medley
>>>>
>>>>> On Apr 1, 2015, at 9:03 AM, Amlan Roy <amlan....@cleartrip.com> wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> I am new to Cassandra. I have setup a cluster with Cassandra 2.0.13. I am
>>>>> writing the same data in HBase and Cassandra and find that the writes are
>>>>> extremely slow in Cassandra and frequently seeing exception “Cassandra
>>>>> timeout during write query at consistency ONE". The cluster size for both
>>>>> HBase and Cassandra are same.
>>>>>
>>>>> Looks like something is wrong with my cluster setup. What can be the
>>>>> possible issue? Data and commit logs are written into two separate disks.
>>>>>
>>>>> Regards,
>>>>> Amlan
>>>>
>>>
>>
>
