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Skip sharding for versioned kv with one shard #708

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yl-lisen opened this issue May 13, 2024 · 0 comments · May be fixed by #709
Open

Skip sharding for versioned kv with one shard #708

yl-lisen opened this issue May 13, 2024 · 0 comments · May be fixed by #709
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@yl-lisen
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enhancement New feature or request

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@yl-lisen
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Describe what enhancement you'd like to have

CREATE STREAM kv(id int64, value float) primary key id settings mode='versioned_kv';

--- actual default sharding expression is 
CREATE STREAM default.kv
(
  `id` int64,
  `value` float32,
  `_tp_time` datetime64(3, 'UTC') DEFAULT now64(3, 'UTC') CODEC(DoubleDelta, LZ4),
  INDEX _tp_time_index _tp_time TYPE minmax GRANULARITY 2
)
ENGINE = Stream(1, 1, weak_hash32(id))
PARTITION BY to_YYYYMMDD(_tp_time)
PRIMARY KEY id
ORDER BY id
SETTINGS mode = 'versioned_kv', index_granularity = 8192

For one shard, we can skip sharding by weak_hash32
@yl-lisen yl-lisen added the enhancement New feature or request label May 13, 2024
@yl-lisen yl-lisen self-assigned this May 13, 2024
@yl-lisen yl-lisen linked a pull request May 13, 2024 that will close this issue
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tweak default sharding rule for one shard stream with primary keys timeplus-io/proton
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@yl-lisen