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update range & modrange #503

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update range & modrange #503

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7 changes: 7 additions & 0 deletions sharding/src/distribution/modrange.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
pub struct ModRange {
slot: u64,
interval: u64,
shards: usize,
}

// ModRange 分布方法，默认总范围是[0,256)，否则指定slot
Expand All @@ -17,6 +18,7 @@ impl ModRange {
ModRange {
slot,
interval: slot / shards as u64,
shards,
}
}

Expand All @@ -27,6 +29,11 @@ impl ModRange {
val = val.wrapping_abs();
}
let rs = val as u64 / self.interval;
if rs >= self.shards as u64 {
// 超出范围，返回最后一个分片
log::warn!("found modrange slot out of bound, rs:{}, shards:{}", rs, self.shards);
return self.shards - 1;
}
rs as usize
}
}
7 changes: 7 additions & 0 deletions sharding/src/distribution/range.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ use crate::distribution::DIST_RANGE_SLOT_COUNT_DEFAULT;
pub struct Range {
slot: u64,
interval: u64,
shards: usize,
}

// Range 分布方法，默认总范围是[0,256)，否则用
Expand All @@ -16,6 +17,7 @@ impl Range {
Range {
slot,
interval: slot / shards as u64,
shards,
}
}

Expand All @@ -28,6 +30,11 @@ impl Range {
val = val.wrapping_abs();
}
let rs = val as u64 / self.interval;
if rs >= self.shards as u64 {
// 超出范围，返回最后一个分片
log::warn!("found range slot out of bound, rs:{}, shards:{}", rs, self.shards);
return self.shards - 1;
}
rs as usize
}
}
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