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Posted to notifications@texera.apache.org by "aglinxinyuan (via GitHub)" <gi...@apache.org> on 2026/07/03 07:03:24 UTC

[PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

aglinxinyuan opened a new pull request, #6076:
URL: https://github.com/apache/texera/pull/6076

   ### What changes were proposed in this PR?
   
   Add unit test coverage for the four file-reading scan source **executors**, selected from the Codecov report. No production-code changes. Every test is driven by a local temp file (`file:` URI → `ReadonlyLocalFileDocument`); no live DB/network/S3/Iceberg.
   
   | File | Codecov before | Missed lines targeted |
   | --- | --- | --- |
   | `ParallelCSVScanSourceOpExec.scala` | 0% | 43 — construct + schema init, `open` byte-range partitioning (both `endOffset` branches + mid-file partial-line skip + header skip), `produceTuple` happy path, short-row null padding, all-null (blank) line discard, `close` |
   | `JSONLScanSourceOpExec.scala` | 0% | 23 — construct, `produceTuple`, `open` line counting + worker partitioning (both ternary branches), row limit, `close` |
   | `CSVOldScanSourceOpExec.scala` | 0% | 21 — construct + header-based schema, `open` (header vs no-header start offset), `produceTuple` + limit, `close` null-guard before open |
   | `ArrowSourceOpExec.scala` | 0% | 30 — construct, `open` success + error-wrapping path, `produceTuple` batch iteration + offset/limit, `close` no-op before open |
   
   New specs live in each executor's own package so their `private[...]` constructors are reachable, mirroring the existing `FileScanSourceOpExecSpec` temp-file/URI pattern.
   
   ### Any related issues, documentation, discussions?
   
   Follow-up to the review feedback on #6043: prioritize tests that fill uncovered code paths.
   
   ### How was this PR tested?
   
   - `sbt "WorkflowOperator/testOnly *ParallelCSVScanSourceOpExecSpec *JSONLScanSourceOpExecSpec *CSVOldScanSourceOpExecSpec *ArrowSourceOpExecSpec"` — 17 tests, all green
   - `sbt "WorkflowOperator/Test/scalafmtCheck"` and `sbt "WorkflowOperator/scalafixAll --check"` — clean
   
   ### Was this PR authored or co-authored using generative AI tooling?
   
   Generated-by: Claude Code (Opus 4.8 [1M context])
   


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Re: [PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

Posted by "Copilot (via GitHub)" <gi...@apache.org>.
Copilot commented on code in PR #6076:
URL: https://github.com/apache/texera/pull/6076#discussion_r3518084379


##########
common/workflow-operator/src/test/scala/org/apache/texera/amber/operator/source/scan/json/JSONLScanSourceOpExecSpec.scala:
##########
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.texera.amber.operator.source.scan.json
+
+import org.apache.texera.amber.operator.source.scan.FileDecodingMethod
+import org.apache.texera.amber.util.JSONUtils.objectMapper
+import org.scalatest.flatspec.AnyFlatSpec
+
+import java.net.URI
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+
+class JSONLScanSourceOpExecSpec extends AnyFlatSpec {
+
+  private def writeJsonl(lines: String*): URI = {
+    val path = Files.createTempFile("jsonl-scan-", ".jsonl")
+    path.toFile.deleteOnExit()
+    Files.write(path, lines.mkString("\n").getBytes(StandardCharsets.UTF_8))
+    path.toFile.toURI
+  }
+
+  private def descString(
+      uri: URI,
+      flatten: Boolean = false,
+      limit: Option[Int] = None,
+      offset: Option[Int] = None
+  ): String = {
+    val desc = new JSONLScanSourceOpDesc
+    desc.setResolvedFileName(uri)
+    desc.fileEncoding = FileDecodingMethod.UTF_8
+    desc.flatten = flatten
+    desc.limit = limit
+    desc.offset = offset
+    objectMapper.writeValueAsString(desc)
+  }
+
+  private def drain(exec: JSONLScanSourceOpExec): List[Seq[Any]] = {
+    exec.open()
+    try exec.produceTuple().map(_.getFields.toSeq).toList
+    finally exec.close()
+  }
+
+  "JSONLScanSourceOpExec" should "read each JSON line, ordering fields by sorted attribute name" in {
+    val exec = new JSONLScanSourceOpExec(
+      descString(writeJsonl("""{"id":1,"name":"a"}""", """{"id":2,"name":"b"}"""))
+    )

Review Comment:
   This test claims to verify that output fields are ordered by sorted attribute name, but both JSON objects already list fields as `id` then `name`, so the assertions would still pass even if the executor preserved input order. Using a JSON object with reversed key order would make this test actually validate the sorting behavior.



##########
common/workflow-operator/src/test/scala/org/apache/texera/amber/operator/source/scan/csv/ParallelCSVScanSourceOpExecSpec.scala:
##########
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.texera.amber.operator.source.scan.csv
+
+import org.apache.texera.amber.util.JSONUtils.objectMapper
+import org.scalatest.flatspec.AnyFlatSpec
+
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+
+class ParallelCSVScanSourceOpExecSpec extends AnyFlatSpec {
+
+  private def writeCsv(content: String): String = {
+    val file = Files.createTempFile("parallel-csv-", ".csv")
+    file.toFile.deleteOnExit()
+    Files.write(file, content.getBytes(StandardCharsets.UTF_8))
+    file.toFile.toURI.toString
+  }
+
+  private def descString(uri: String, delimiter: String = ",", header: Boolean = true): String = {
+    val desc = new ParallelCSVScanSourceOpDesc()
+    desc.fileName = Some(uri)
+    desc.customDelimiter = Some(delimiter)
+    desc.hasHeader = header
+    desc.setResolvedFileName(new java.net.URI(uri))
+    objectMapper.writeValueAsString(desc)
+  }
+
+  private def drain(exec: ParallelCSVScanSourceOpExec): List[Seq[Any]] = {
+    exec.open()
+    try exec.produceTuple().map(_.getFields.toSeq).toList
+    finally exec.close()
+  }
+
+  "ParallelCSVScanSourceOpExec" should "read every data row of a headered file" in {
+    val exec =
+      new ParallelCSVScanSourceOpExec(descString(writeCsv("id,name,age\n1,Alice,30\n2,Bob,25\n")))
+    val rows = drain(exec)
+    assert(rows.size == 2)
+    assert(rows.head == Seq(1, "Alice", 30))
+    assert(rows(1) == Seq(2, "Bob", 25))
+  }
+
+  it should "not skip the first row when the file has no header" in {
+    val exec =
+      new ParallelCSVScanSourceOpExec(
+        descString(writeCsv("1,Alice,30\n2,Bob,25\n"), header = false)
+      )
+    assert(drain(exec).size == 2)
+  }
+
+  it should "pad short rows with trailing nulls to the schema width" in {
+    // the wide first data row fixes the schema at 3 columns; the short row is padded
+    val exec = new ParallelCSVScanSourceOpExec(descString(writeCsv("a,b,c\n1,2,3\n4,5\n")))
+    val rows = drain(exec)
+    assert(rows.size == 2)
+    assert(rows(1).length == 3)
+    assert(rows(1)(2) == null)
+  }
+
+  it should "discard all-null (blank) lines" in {
+    val exec =
+      new ParallelCSVScanSourceOpExec(descString(writeCsv("name,city\nAlice,NYC\n\nBob,LA\n")))
+    val rows = drain(exec)
+    assert(rows.size == 2)
+    assert(rows.map(_.head) == Seq("Alice", "Bob"))
+  }
+
+  it should "partition a headerless file across workers by byte range" in {
+    // Two workers over the same file: worker 0 (idx != workerCount-1) takes the
+    // first byte-range chunk; worker 1 seeks past its chunk start and drops the
+    // leading partial line. Exact boundary rows depend on the block reader
+    // reading one line past the boundary, so assert only that the union covers
+    // all rows without duplication.
+    val uri = writeCsv("1,aaaa\n2,bbbb\n3,cccc\n4,dddd\n")

Review Comment:
   The byte-range partitioning test is intended to exercise the “drop leading partial line” behavior, but the current fixture has equal-length rows (28 bytes total), so `totalBytes / 2` lands exactly on a newline boundary. In that case worker 1 skips a full line rather than a partial line, and the test relies on `BufferedBlockReader` reading one line past the boundary. Adjusting the input so the split point falls in the middle of a row makes the test deterministic for the partial-line-skip path.



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Re: [PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

Posted by "aglinxinyuan (via GitHub)" <gi...@apache.org>.
aglinxinyuan commented on code in PR #6076:
URL: https://github.com/apache/texera/pull/6076#discussion_r3518165108


##########
common/workflow-operator/src/test/scala/org/apache/texera/amber/operator/source/scan/json/JSONLScanSourceOpExecSpec.scala:
##########
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.texera.amber.operator.source.scan.json
+
+import org.apache.texera.amber.operator.source.scan.FileDecodingMethod
+import org.apache.texera.amber.util.JSONUtils.objectMapper
+import org.scalatest.flatspec.AnyFlatSpec
+
+import java.net.URI
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+
+class JSONLScanSourceOpExecSpec extends AnyFlatSpec {
+
+  private def writeJsonl(lines: String*): URI = {
+    val path = Files.createTempFile("jsonl-scan-", ".jsonl")
+    path.toFile.deleteOnExit()
+    Files.write(path, lines.mkString("\n").getBytes(StandardCharsets.UTF_8))
+    path.toFile.toURI
+  }
+
+  private def descString(
+      uri: URI,
+      flatten: Boolean = false,
+      limit: Option[Int] = None,
+      offset: Option[Int] = None
+  ): String = {
+    val desc = new JSONLScanSourceOpDesc
+    desc.setResolvedFileName(uri)
+    desc.fileEncoding = FileDecodingMethod.UTF_8
+    desc.flatten = flatten
+    desc.limit = limit
+    desc.offset = offset
+    objectMapper.writeValueAsString(desc)
+  }
+
+  private def drain(exec: JSONLScanSourceOpExec): List[Seq[Any]] = {
+    exec.open()
+    try exec.produceTuple().map(_.getFields.toSeq).toList
+    finally exec.close()
+  }
+
+  "JSONLScanSourceOpExec" should "read each JSON line, ordering fields by sorted attribute name" in {
+    val exec = new JSONLScanSourceOpExec(
+      descString(writeJsonl("""{"id":1,"name":"a"}""", """{"id":2,"name":"b"}"""))
+    )

Review Comment:
   Good point — the JSON objects now list keys as name-then-id, so the id-then-name assertion fails if the executor ever preserved input order.



##########
common/workflow-operator/src/test/scala/org/apache/texera/amber/operator/source/scan/csv/ParallelCSVScanSourceOpExecSpec.scala:
##########
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.texera.amber.operator.source.scan.csv
+
+import org.apache.texera.amber.util.JSONUtils.objectMapper
+import org.scalatest.flatspec.AnyFlatSpec
+
+import java.nio.charset.StandardCharsets
+import java.nio.file.Files
+
+class ParallelCSVScanSourceOpExecSpec extends AnyFlatSpec {
+
+  private def writeCsv(content: String): String = {
+    val file = Files.createTempFile("parallel-csv-", ".csv")
+    file.toFile.deleteOnExit()
+    Files.write(file, content.getBytes(StandardCharsets.UTF_8))
+    file.toFile.toURI.toString
+  }
+
+  private def descString(uri: String, delimiter: String = ",", header: Boolean = true): String = {
+    val desc = new ParallelCSVScanSourceOpDesc()
+    desc.fileName = Some(uri)
+    desc.customDelimiter = Some(delimiter)
+    desc.hasHeader = header
+    desc.setResolvedFileName(new java.net.URI(uri))
+    objectMapper.writeValueAsString(desc)
+  }
+
+  private def drain(exec: ParallelCSVScanSourceOpExec): List[Seq[Any]] = {
+    exec.open()
+    try exec.produceTuple().map(_.getFields.toSeq).toList
+    finally exec.close()
+  }
+
+  "ParallelCSVScanSourceOpExec" should "read every data row of a headered file" in {
+    val exec =
+      new ParallelCSVScanSourceOpExec(descString(writeCsv("id,name,age\n1,Alice,30\n2,Bob,25\n")))
+    val rows = drain(exec)
+    assert(rows.size == 2)
+    assert(rows.head == Seq(1, "Alice", 30))
+    assert(rows(1) == Seq(2, "Bob", 25))
+  }
+
+  it should "not skip the first row when the file has no header" in {
+    val exec =
+      new ParallelCSVScanSourceOpExec(
+        descString(writeCsv("1,Alice,30\n2,Bob,25\n"), header = false)
+      )
+    assert(drain(exec).size == 2)
+  }
+
+  it should "pad short rows with trailing nulls to the schema width" in {
+    // the wide first data row fixes the schema at 3 columns; the short row is padded
+    val exec = new ParallelCSVScanSourceOpExec(descString(writeCsv("a,b,c\n1,2,3\n4,5\n")))
+    val rows = drain(exec)
+    assert(rows.size == 2)
+    assert(rows(1).length == 3)
+    assert(rows(1)(2) == null)
+  }
+
+  it should "discard all-null (blank) lines" in {
+    val exec =
+      new ParallelCSVScanSourceOpExec(descString(writeCsv("name,city\nAlice,NYC\n\nBob,LA\n")))
+    val rows = drain(exec)
+    assert(rows.size == 2)
+    assert(rows.map(_.head) == Seq("Alice", "Bob"))
+  }
+
+  it should "partition a headerless file across workers by byte range" in {
+    // Two workers over the same file: worker 0 (idx != workerCount-1) takes the
+    // first byte-range chunk; worker 1 seeks past its chunk start and drops the
+    // leading partial line. Exact boundary rows depend on the block reader
+    // reading one line past the boundary, so assert only that the union covers
+    // all rows without duplication.
+    val uri = writeCsv("1,aaaa\n2,bbbb\n3,cccc\n4,dddd\n")

Review Comment:
   Fixed — the fixture now uses uneven row widths so totalBytes/2 (=12) lands inside the second row, so worker 1 skips a genuine partial line rather than a full one.



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Re: [PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #6076:
URL: https://github.com/apache/texera/pull/6076#issuecomment-4873620472

   <!-- texera-benchmarks-comment -->
   ## ⚠️ Benchmark changes need a look
   
   🟢 2 better · 🔴 5 worse · ⚪ 8 noise (<±5%) · 0 without baseline
   
   > Compared against main `a53d95a` benchmarked on **this same runner**, so the delta is largely free of cross-runner hardware noise. The "7d avg" column still reflects the gh-pages dashboard. Treat <±5% as noise unless repeated.
   
   [Dashboard](https://apache.github.io/texera/dev/bench/) · [Run](https://github.com/apache/texera/actions/runs/28644324005)
   
   | | config | throughput | MB/s | latency | max Δ latest / 7d |
   |---|---|---:|---:|---:|---:|
   | 🔴 | bs=10 sw=10 sl=64 | 369 | 0.225 | 24,557/51,680/51,680 us | 🔴 +81.5% / 🔴 +238.1% |
   | 🔴 | bs=100 sw=10 sl=64 | 932 | 0.569 | 107,262/130,937/130,937 us | 🟢 -11.7% / 🔴 +20.8% |
   | ⚪ | bs=1000 sw=10 sl=64 | 1,094 | 0.668 | 915,684/962,113/962,113 us | ⚪ within ±5% / 🟢 -10.0% |
   
   <details><summary>Baseline details</summary>
   
   Latest main `a53d95a` from same runner
   
   | config | metric | PR | latest main | 7d avg | Δ latest | Δ 7d |
   |---|---|---:|---:|---:|---:|---:|
   | bs=10 sw=10 sl=64 | throughput | 369 tuples/sec | 429 tuples/sec | 770.95 tuples/sec | -14.0% | -52.1% |
   | bs=10 sw=10 sl=64 | MB/s | 0.225 MB/s | 0.262 MB/s | 0.471 MB/s | -14.1% | -52.2% |
   | bs=10 sw=10 sl=64 | p50 | 24,557 us | 24,347 us | 12,775 us | +0.9% | +92.2% |
   | bs=10 sw=10 sl=64 | p95 | 51,680 us | 28,481 us | 15,286 us | +81.5% | +238.1% |
   | bs=10 sw=10 sl=64 | p99 | 51,680 us | 28,481 us | 18,795 us | +81.5% | +175.0% |
   | bs=100 sw=10 sl=64 | throughput | 932 tuples/sec | 939 tuples/sec | 976.93 tuples/sec | -0.7% | -4.6% |
   | bs=100 sw=10 sl=64 | MB/s | 0.569 MB/s | 0.573 MB/s | 0.596 MB/s | -0.7% | -4.6% |
   | bs=100 sw=10 sl=64 | p50 | 107,262 us | 100,996 us | 102,557 us | +6.2% | +4.6% |
   | bs=100 sw=10 sl=64 | p95 | 130,937 us | 148,276 us | 108,383 us | -11.7% | +20.8% |
   | bs=100 sw=10 sl=64 | p99 | 130,937 us | 148,276 us | 115,249 us | -11.7% | +13.6% |
   | bs=1000 sw=10 sl=64 | throughput | 1,094 tuples/sec | 1,120 tuples/sec | 1,009 tuples/sec | -2.3% | +8.4% |
   | bs=1000 sw=10 sl=64 | MB/s | 0.668 MB/s | 0.684 MB/s | 0.616 MB/s | -2.3% | +8.5% |
   | bs=1000 sw=10 sl=64 | p50 | 915,684 us | 894,159 us | 997,695 us | +2.4% | -8.2% |
   | bs=1000 sw=10 sl=64 | p95 | 962,113 us | 946,290 us | 1,036,731 us | +1.7% | -7.2% |
   | bs=1000 sw=10 sl=64 | p99 | 962,113 us | 946,290 us | 1,069,334 us | +1.7% | -10.0% |
   
   </details>
   
   <details><summary>Raw CSV</summary>
   
   ```csv
   config_idx,batch_size,schema_width,string_len,num_batches,total_ms,total_tuples,total_bytes,tuples_per_sec,mb_per_sec,lat_p50_us,lat_p95_us,lat_p99_us
   0,10,10,64,20,542.63,200,128000,369,0.225,24557.33,51680.03,51680.03
   1,100,10,64,20,2145.39,2000,1280000,932,0.569,107262.13,130937.42,130937.42
   2,1000,10,64,20,18285.17,20000,12800000,1094,0.668,915683.54,962113.33,962113.33
   ```
   
   </details>
   


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Re: [PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

Posted by "codecov-commenter (via GitHub)" <gi...@apache.org>.
codecov-commenter commented on PR #6076:
URL: https://github.com/apache/texera/pull/6076#issuecomment-4873594875

   ## [Codecov](https://app.codecov.io/gh/apache/texera/pull/6076?dropdown=coverage&src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache) Report
   :white_check_mark: All modified and coverable lines are covered by tests.
   :white_check_mark: Project coverage is 57.21%. Comparing base ([`a53d95a`](https://app.codecov.io/gh/apache/texera/commit/a53d95a9a32dd38815dcfc3e75f4157a45a2997b?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)) to head ([`1c5cf64`](https://app.codecov.io/gh/apache/texera/commit/1c5cf64c2bf92ea91a6fd28da2ac65f8d1238eff?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)).
   
   <details><summary>Additional details and impacted files</summary>
   
   
   
   ```diff
   @@            Coverage Diff            @@
   ##               main    #6076   +/-   ##
   =========================================
     Coverage     57.21%   57.21%           
     Complexity     3103     3103           
   =========================================
     Files          1130     1130           
     Lines         43825    43825           
     Branches       4747     4747           
   =========================================
     Hits          25075    25075           
     Misses        17313    17313           
     Partials       1437     1437           
   ```
   
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Re: [PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

Posted by "github-actions[bot] (via GitHub)" <gi...@apache.org>.
github-actions[bot] commented on PR #6076:
URL: https://github.com/apache/texera/pull/6076#issuecomment-4873559617

   <!-- texera-reviewer-suggestion -->
   ### Automated Reviewer Suggestions
   
   Based on the `git blame` history of the changed files, we recommend the following reviewers:
   
   - No candidates found from `git blame` history.
   


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Re: [PR] test(workflow-operator): add unit test coverage for scan source executors [texera]

Posted by "aglinxinyuan (via GitHub)" <gi...@apache.org>.
aglinxinyuan merged PR #6076:
URL: https://github.com/apache/texera/pull/6076


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