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Author SHA1 Message Date
Lance Release
6b5130cccb Bump version: 0.21.0-beta.0 → 0.21.0 2025-06-20 05:46:32 +00:00
9 changed files with 179 additions and 164 deletions

129
Cargo.lock generated
View File

@@ -1852,7 +1852,7 @@ dependencies = [
"futures",
"itertools 0.14.0",
"log",
"object_store",
"object_store 0.12.2",
"parking_lot",
"rand 0.8.5",
"regex",
@@ -1884,7 +1884,7 @@ dependencies = [
"futures",
"itertools 0.14.0",
"log",
"object_store",
"object_store 0.12.2",
"parking_lot",
"tokio",
]
@@ -1908,7 +1908,7 @@ dependencies = [
"datafusion-session",
"futures",
"log",
"object_store",
"object_store 0.12.2",
"tokio",
]
@@ -1927,7 +1927,7 @@ dependencies = [
"indexmap 2.9.0",
"libc",
"log",
"object_store",
"object_store 0.12.2",
"paste",
"sqlparser 0.55.0",
"tokio",
@@ -1967,7 +1967,7 @@ dependencies = [
"glob",
"itertools 0.14.0",
"log",
"object_store",
"object_store 0.12.2",
"rand 0.8.5",
"tokio",
"url",
@@ -1993,7 +1993,7 @@ dependencies = [
"datafusion-physical-plan",
"datafusion-session",
"futures",
"object_store",
"object_store 0.12.2",
"regex",
"tokio",
]
@@ -2018,7 +2018,7 @@ dependencies = [
"datafusion-physical-plan",
"datafusion-session",
"futures",
"object_store",
"object_store 0.12.2",
"serde_json",
"tokio",
]
@@ -2041,7 +2041,7 @@ dependencies = [
"datafusion-expr",
"futures",
"log",
"object_store",
"object_store 0.12.2",
"parking_lot",
"rand 0.8.5",
"tempfile",
@@ -2340,7 +2340,7 @@ dependencies = [
"futures",
"itertools 0.14.0",
"log",
"object_store",
"object_store 0.12.2",
"parking_lot",
"tokio",
]
@@ -2813,7 +2813,9 @@ checksum = "42703706b716c37f96a77aea830392ad231f44c9e9a67872fa5548707e11b11c"
[[package]]
name = "fsst"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3b6a55335126d20524dc83cf0638b7ca1b5d9736f9064a89c47e4d028cbaccdb"
dependencies = [
"rand 0.8.5",
]
@@ -3905,7 +3907,9 @@ dependencies = [
[[package]]
name = "lance"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "84a9bf2cf9ff1d8b8a8c822cf4aaec7023fbe056d3348dce347957695470bd19"
dependencies = [
"arrow",
"arrow-arith",
@@ -3948,7 +3952,7 @@ dependencies = [
"lazy_static",
"log",
"moka",
"object_store",
"object_store 0.11.2",
"permutation",
"pin-project",
"prost",
@@ -3968,7 +3972,9 @@ dependencies = [
[[package]]
name = "lance-arrow"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "82fc2b0dd2598f4b390445d63a3906f84d928c250b208d382d4cfc22681b23c0"
dependencies = [
"arrow-array",
"arrow-buffer",
@@ -3985,7 +3991,9 @@ dependencies = [
[[package]]
name = "lance-core"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4118c6e2ac2d26ff80e55708f337c4593381a32751f2a79a03d92452885bd648"
dependencies = [
"arrow-array",
"arrow-buffer",
@@ -4005,7 +4013,7 @@ dependencies = [
"mock_instant",
"moka",
"num_cpus",
"object_store",
"object_store 0.11.2",
"pin-project",
"prost",
"rand 0.8.5",
@@ -4021,7 +4029,9 @@ dependencies = [
[[package]]
name = "lance-datafusion"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ccf8b01e9a5f15d4975423ea1495df85cf36f9036c3ed999190d4631ffbd28b6"
dependencies = [
"arrow",
"arrow-array",
@@ -4050,7 +4060,9 @@ dependencies = [
[[package]]
name = "lance-datagen"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3fbedb84243fb2fe255b4e9ac298019d2e93e83fcc9ce2eb67a4ac7cab427dda"
dependencies = [
"arrow",
"arrow-array",
@@ -4065,7 +4077,9 @@ dependencies = [
[[package]]
name = "lance-encoding"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9a0e078414cce96da2e2b37290d0b38a81ba6b0ebcad6806b231c2cd8d04427a"
dependencies = [
"arrayref",
"arrow",
@@ -4099,13 +4113,14 @@ dependencies = [
"snafu",
"tokio",
"tracing",
"xxhash-rust",
"zstd",
]
[[package]]
name = "lance-file"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce7deba5b59118f7ef726859ace192b7cc7da4e6639147d2a3908a2de621ce98"
dependencies = [
"arrow-arith",
"arrow-array",
@@ -4126,7 +4141,7 @@ dependencies = [
"lance-io",
"log",
"num-traits",
"object_store",
"object_store 0.11.2",
"prost",
"prost-build",
"prost-types",
@@ -4139,7 +4154,9 @@ dependencies = [
[[package]]
name = "lance-index"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5bee1aecc60c759436d8f952e2d9c4e93d1940bfbdc1869068b4ac6b01e86b2f"
dependencies = [
"arrow",
"arrow-array",
@@ -4176,7 +4193,7 @@ dependencies = [
"log",
"moka",
"num-traits",
"object_store",
"object_store 0.11.2",
"prost",
"prost-build",
"rand 0.8.5",
@@ -4194,7 +4211,9 @@ dependencies = [
[[package]]
name = "lance-io"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "61a48f6a3f5433ca5095993fcd8bb47efbf473af852b9aca1e175a3d7bbf67fd"
dependencies = [
"arrow",
"arrow-arith",
@@ -4218,7 +4237,7 @@ dependencies = [
"lance-core",
"lazy_static",
"log",
"object_store",
"object_store 0.11.2",
"path_abs",
"pin-project",
"prost",
@@ -4233,7 +4252,9 @@ dependencies = [
[[package]]
name = "lance-linalg"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "620dedc792311862fc336b2651e825d2b450bbade7bfc819b7b182c3bb585c1e"
dependencies = [
"arrow-array",
"arrow-ord",
@@ -4256,7 +4277,9 @@ dependencies = [
[[package]]
name = "lance-table"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b010312330943c5e81628722a50e3679688d96065348659b7913964f13765cf"
dependencies = [
"arrow",
"arrow-array",
@@ -4277,7 +4300,7 @@ dependencies = [
"lance-io",
"lazy_static",
"log",
"object_store",
"object_store 0.11.2",
"prost",
"prost-build",
"prost-types",
@@ -4295,7 +4318,9 @@ dependencies = [
[[package]]
name = "lance-testing"
version = "0.31.0"
version = "0.30.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "efa10957cdadef40e853896a67282cd29898775b29715eec42dd49bc3b3c8554"
dependencies = [
"arrow-array",
"arrow-schema",
@@ -4306,7 +4331,7 @@ dependencies = [
[[package]]
name = "lancedb"
version = "0.21.0"
version = "0.20.1-beta.2"
dependencies = [
"arrow",
"arrow-array",
@@ -4353,7 +4378,7 @@ dependencies = [
"log",
"moka",
"num-traits",
"object_store",
"object_store 0.11.2",
"pin-project",
"polars",
"polars-arrow",
@@ -4393,7 +4418,7 @@ dependencies = [
[[package]]
name = "lancedb-node"
version = "0.21.0"
version = "0.20.1-beta.2"
dependencies = [
"arrow-array",
"arrow-ipc",
@@ -4410,7 +4435,7 @@ dependencies = [
"lancedb",
"lzma-sys",
"neon",
"object_store",
"object_store 0.11.2",
"once_cell",
"snafu",
"tokio",
@@ -4418,7 +4443,7 @@ dependencies = [
[[package]]
name = "lancedb-nodejs"
version = "0.21.0"
version = "0.20.1-beta.2"
dependencies = [
"arrow-array",
"arrow-ipc",
@@ -4438,7 +4463,7 @@ dependencies = [
[[package]]
name = "lancedb-python"
version = "0.24.0"
version = "0.23.1-beta.2"
dependencies = [
"arrow",
"env_logger",
@@ -5149,33 +5174,51 @@ dependencies = [
[[package]]
name = "object_store"
version = "0.12.2"
version = "0.11.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7781f96d79ed0f961a7021424ab01840efbda64ae7a505aaea195efc91eaaec4"
checksum = "3cfccb68961a56facde1163f9319e0d15743352344e7808a11795fb99698dcaf"
dependencies = [
"async-trait",
"base64 0.22.1",
"bytes",
"chrono",
"form_urlencoded",
"futures",
"http 1.3.1",
"http-body-util",
"httparse",
"humantime",
"hyper 1.6.0",
"itertools 0.14.0",
"itertools 0.13.0",
"md-5",
"parking_lot",
"percent-encoding",
"quick-xml",
"rand 0.9.1",
"rand 0.8.5",
"reqwest",
"ring",
"rustls-pemfile 2.2.0",
"serde",
"serde_json",
"serde_urlencoded",
"snafu",
"tokio",
"tracing",
"url",
"walkdir",
]
[[package]]
name = "object_store"
version = "0.12.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7781f96d79ed0f961a7021424ab01840efbda64ae7a505aaea195efc91eaaec4"
dependencies = [
"async-trait",
"bytes",
"chrono",
"futures",
"http 1.3.1",
"humantime",
"itertools 0.14.0",
"parking_lot",
"percent-encoding",
"thiserror 2.0.12",
"tokio",
"tracing",

View File

@@ -21,14 +21,14 @@ categories = ["database-implementations"]
rust-version = "1.78.0"
[workspace.dependencies]
lance = { path = "../lance/rust/lance", "features" = ["dynamodb"] }
lance-io = { path = "../lance/rust/lance-io" }
lance-index = { path = "../lance/rust/lance-index" }
lance-linalg = { path = "../lance/rust/lance-linalg" }
lance-table = { path = "../lance/rust/lance-table" }
lance-testing = { path = "../lance/rust/lance-testing" }
lance-datafusion = { path = "../lance/rust/lance-datafusion" }
lance-encoding = { path = "../lance/rust/lance-encoding" }
lance = { "version" = "=0.30.0", "features" = ["dynamodb"] }
lance-io = "=0.30.0"
lance-index = "=0.30.0"
lance-linalg = "=0.30.0"
lance-table = "=0.30.0"
lance-testing = "=0.30.0"
lance-datafusion = "=0.30.0"
lance-encoding = "=0.30.0"
# Note that this one does not include pyarrow
arrow = { version = "55.1", optional = false }
arrow-array = "55.1"
@@ -52,7 +52,7 @@ half = { "version" = "=2.5.0", default-features = false, features = [
futures = "0"
log = "0.4"
moka = { version = "0.12", features = ["future"] }
object_store = "0.12.0"
object_store = "0.11.0"
pin-project = "1.0.7"
snafu = "0.8"
url = "2"

74
node/package-lock.json generated
View File

@@ -1,12 +1,12 @@
{
"name": "vectordb",
"version": "0.21.0",
"version": "0.20.1-beta.2",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "vectordb",
"version": "0.21.0",
"version": "0.20.1-beta.2",
"cpu": [
"x64",
"arm64"
@@ -52,11 +52,11 @@
"uuid": "^9.0.0"
},
"optionalDependencies": {
"@lancedb/vectordb-darwin-arm64": "0.21.0",
"@lancedb/vectordb-darwin-x64": "0.21.0",
"@lancedb/vectordb-linux-arm64-gnu": "0.21.0",
"@lancedb/vectordb-linux-x64-gnu": "0.21.0",
"@lancedb/vectordb-win32-x64-msvc": "0.21.0"
"@lancedb/vectordb-darwin-arm64": "0.20.1-beta.2",
"@lancedb/vectordb-darwin-x64": "0.20.1-beta.2",
"@lancedb/vectordb-linux-arm64-gnu": "0.20.1-beta.2",
"@lancedb/vectordb-linux-x64-gnu": "0.20.1-beta.2",
"@lancedb/vectordb-win32-x64-msvc": "0.20.1-beta.2"
},
"peerDependencies": {
"@apache-arrow/ts": "^14.0.2",
@@ -326,6 +326,66 @@
"@jridgewell/sourcemap-codec": "^1.4.10"
}
},
"node_modules/@lancedb/vectordb-darwin-arm64": {
"version": "0.20.1-beta.2",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-darwin-arm64/-/vectordb-darwin-arm64-0.20.1-beta.2.tgz",
"integrity": "sha512-mqi0yI+ZwBTydaDy1FRHAUZwrWS28u6tbHTe1s4uSrmERbVI6PfmoPR+NZWWAp6ZhlseSdl/+yeI4imk11rQSw==",
"cpu": [
"arm64"
],
"optional": true,
"os": [
"darwin"
]
},
"node_modules/@lancedb/vectordb-darwin-x64": {
"version": "0.20.1-beta.2",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-darwin-x64/-/vectordb-darwin-x64-0.20.1-beta.2.tgz",
"integrity": "sha512-m8EYYA8JZIeNsJqQsBDUMu6r31/u7FzpjonJ4Y+CjapVl6UdvI65KUkeL2dYrFao++RuIoaiqcm3e7gRgFZpXQ==",
"cpu": [
"x64"
],
"optional": true,
"os": [
"darwin"
]
},
"node_modules/@lancedb/vectordb-linux-arm64-gnu": {
"version": "0.20.1-beta.2",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-linux-arm64-gnu/-/vectordb-linux-arm64-gnu-0.20.1-beta.2.tgz",
"integrity": "sha512-3Og2+bk4GlWmMO1Yg2HBfeb5zrOMLaIHD7bEqQ4+6yw4IckAaV+ke05H0tyyqmOVrOQ0LpvtXgD7pPztjm9r9A==",
"cpu": [
"arm64"
],
"optional": true,
"os": [
"linux"
]
},
"node_modules/@lancedb/vectordb-linux-x64-gnu": {
"version": "0.20.1-beta.2",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-linux-x64-gnu/-/vectordb-linux-x64-gnu-0.20.1-beta.2.tgz",
"integrity": "sha512-mwTQyA/FBoU/FkPuvCNBZG3y83gBN+iYoejehBH2HBkLUIcmlsDgSRZ1OQ+f9ijj12EMBCA11tBUPA9zhHzyrw==",
"cpu": [
"x64"
],
"optional": true,
"os": [
"linux"
]
},
"node_modules/@lancedb/vectordb-win32-x64-msvc": {
"version": "0.20.1-beta.2",
"resolved": "https://registry.npmjs.org/@lancedb/vectordb-win32-x64-msvc/-/vectordb-win32-x64-msvc-0.20.1-beta.2.tgz",
"integrity": "sha512-VkjNpqhK3l3uHLLPmox+HrmKPMaZgV+qsGQWx0nfseGnSOEmXAWZWQFe0APVCQ9y0xTypQB0oH7eSOPZv2t4WQ==",
"cpu": [
"x64"
],
"optional": true,
"os": [
"win32"
]
},
"node_modules/@neon-rs/cli": {
"version": "0.0.160",
"resolved": "https://registry.npmjs.org/@neon-rs/cli/-/cli-0.0.160.tgz",

View File

@@ -1,12 +1,12 @@
{
"name": "@lancedb/lancedb",
"version": "0.21.0",
"version": "0.20.1-beta.2",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "@lancedb/lancedb",
"version": "0.21.0",
"version": "0.20.1-beta.2",
"cpu": [
"x64",
"arm64"

View File

@@ -3042,21 +3042,15 @@ class AsyncHybridQuery(AsyncQueryBase, AsyncVectorQueryBase):
>>> asyncio.run(doctest_example()) # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
Vector Search Plan:
ProjectionExec: expr=[vector@0 as vector, text@3 as text, _distance@2 as _distance]
Take: columns="vector, _rowid, _distance, (text)"
CoalesceBatchesExec: target_batch_size=1024
GlobalLimitExec: skip=0, fetch=10
FilterExec: _distance@2 IS NOT NULL
SortExec: TopK(fetch=10), expr=[_distance@2 ASC NULLS LAST], preserve_partitioning=[false]
KNNVectorDistance: metric=l2
LanceScan: uri=..., projection=[vector], row_id=true, row_addr=false, ordered=false
<BLANKLINE>
Take: columns="vector, _rowid, _distance, (text)"
CoalesceBatchesExec: target_batch_size=1024
GlobalLimitExec: skip=0, fetch=10
FilterExec: _distance@2 IS NOT NULL
SortExec: TopK(fetch=10), expr=[_distance@2 ASC NULLS LAST], preserve_partitioning=[false]
KNNVectorDistance: metric=l2
LanceScan: uri=..., projection=[vector], row_id=true, row_addr=false, ordered=false
FTS Search Plan:
ProjectionExec: expr=[vector@2 as vector, text@3 as text, _score@1 as _score]
Take: columns="_rowid, _score, (vector), (text)"
CoalesceBatchesExec: target_batch_size=1024
GlobalLimitExec: skip=0, fetch=10
MatchQuery: query=hello
<BLANKLINE>
LanceScan: uri=..., projection=[vector, text], row_id=false, row_addr=false, ordered=true
Parameters
----------

View File

@@ -775,82 +775,6 @@ async def test_explain_plan_async(table_async: AsyncTable):
assert "KNN" in plan
@pytest.mark.asyncio
async def test_explain_plan_fts(table_async: AsyncTable):
"""Test explain plan for FTS queries"""
# Create FTS index
from lancedb.index import FTS
await table_async.create_index("text", config=FTS())
# Test pure FTS query
query = await table_async.search("dog", query_type="fts", fts_columns="text")
plan = await query.explain_plan()
# Should show FTS details (issue #2465 is now fixed)
assert "MatchQuery: query=dog" in plan
assert "GlobalLimitExec" in plan # Default limit
# Test FTS query with limit
query_with_limit = await table_async.search(
"dog", query_type="fts", fts_columns="text"
)
plan_with_limit = await query_with_limit.limit(1).explain_plan()
assert "MatchQuery: query=dog" in plan_with_limit
assert "GlobalLimitExec: skip=0, fetch=1" in plan_with_limit
# Test FTS query with offset and limit
query_with_offset = await table_async.search(
"dog", query_type="fts", fts_columns="text"
)
plan_with_offset = await query_with_offset.offset(1).limit(1).explain_plan()
assert "MatchQuery: query=dog" in plan_with_offset
assert "GlobalLimitExec: skip=1, fetch=1" in plan_with_offset
@pytest.mark.asyncio
async def test_explain_plan_vector_with_limit_offset(table_async: AsyncTable):
"""Test explain plan for vector queries with limit and offset"""
# Test vector query with limit
plan_with_limit = await (
table_async.query().nearest_to(pa.array([1, 2])).limit(1).explain_plan()
)
assert "KNN" in plan_with_limit
assert "GlobalLimitExec: skip=0, fetch=1" in plan_with_limit
# Test vector query with offset and limit
plan_with_offset = await (
table_async.query()
.nearest_to(pa.array([1, 2]))
.offset(1)
.limit(1)
.explain_plan()
)
assert "KNN" in plan_with_offset
assert "GlobalLimitExec: skip=1, fetch=1" in plan_with_offset
@pytest.mark.asyncio
async def test_explain_plan_with_filters(table_async: AsyncTable):
"""Test explain plan for queries with filters"""
# Test vector query with filter
plan_with_filter = await (
table_async.query().nearest_to(pa.array([1, 2])).where("id = 1").explain_plan()
)
assert "KNN" in plan_with_filter
assert "FilterExec" in plan_with_filter
# Test FTS query with filter
from lancedb.index import FTS
await table_async.create_index("text", config=FTS())
query_fts_filter = await table_async.search(
"dog", query_type="fts", fts_columns="text"
)
plan_fts_filter = await query_fts_filter.where("id = 1").explain_plan()
assert "MatchQuery: query=dog" in plan_fts_filter
assert "FilterExec: id@" in plan_fts_filter # Should show filter details
@pytest.mark.asyncio
async def test_query_camelcase_async(tmp_path):
db = await lancedb.connect_async(tmp_path)

View File

@@ -563,10 +563,7 @@ impl FTSQuery {
}
pub fn explain_plan(self_: PyRef<'_, Self>, verbose: bool) -> PyResult<Bound<'_, PyAny>> {
let inner = self_
.inner
.clone()
.full_text_search(self_.fts_query.clone());
let inner = self_.inner.clone();
future_into_py(self_.py(), async move {
inner
.explain_plan(verbose)
@@ -576,10 +573,7 @@ impl FTSQuery {
}
pub fn analyze_plan(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
let inner = self_
.inner
.clone()
.full_text_search(self_.fts_query.clone());
let inner = self_.inner.clone();
future_into_py(self_.py(), async move {
inner
.analyze_plan()

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@@ -107,7 +107,7 @@ impl ObjectStore for MirroringObjectStore {
self.primary.delete(location).await
}
fn list(&self, prefix: Option<&Path>) -> BoxStream<'static, Result<ObjectMeta>> {
fn list(&self, prefix: Option<&Path>) -> BoxStream<'_, Result<ObjectMeta>> {
self.primary.list(prefix)
}

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@@ -133,7 +133,7 @@ impl ObjectStore for IoTrackingStore {
result
}
async fn get_range(&self, location: &Path, range: std::ops::Range<u64>) -> OSResult<Bytes> {
async fn get_range(&self, location: &Path, range: std::ops::Range<usize>) -> OSResult<Bytes> {
let result = self.target.get_range(location, range).await;
if let Ok(result) = &result {
self.record_read(result.len() as u64);
@@ -144,7 +144,7 @@ impl ObjectStore for IoTrackingStore {
async fn get_ranges(
&self,
location: &Path,
ranges: &[std::ops::Range<u64>],
ranges: &[std::ops::Range<usize>],
) -> OSResult<Vec<Bytes>> {
let result = self.target.get_ranges(location, ranges).await;
if let Ok(result) = &result {
@@ -170,7 +170,7 @@ impl ObjectStore for IoTrackingStore {
self.target.delete_stream(locations)
}
fn list(&self, prefix: Option<&Path>) -> BoxStream<'static, OSResult<ObjectMeta>> {
fn list(&self, prefix: Option<&Path>) -> BoxStream<'_, OSResult<ObjectMeta>> {
self.record_read(0);
self.target.list(prefix)
}
@@ -179,7 +179,7 @@ impl ObjectStore for IoTrackingStore {
&self,
prefix: Option<&Path>,
offset: &Path,
) -> BoxStream<'static, OSResult<ObjectMeta>> {
) -> BoxStream<'_, OSResult<ObjectMeta>> {
self.record_read(0);
self.target.list_with_offset(prefix, offset)
}