Fix(jupyter):use non-blocking stdin check to prevent hanging

.github/workflows/build_linux_arm64_wheels-gh.yml

@@ -117,7 +117,7 @@ jobs:
             echo "Installing dependencies for Python $version"
             pyenv shell $version
             python -m pip install --upgrade pip
-            python -m pip install setuptools tox pandas pyarrow twine psutil deltalake wheel
+            python -m pip install setuptools tox pandas pyarrow twine psutil deltalake wheel jupyter nbconvert
             pyenv shell --unset
           done
       - name: Upgrade Rust toolchain
@@ -281,6 +281,15 @@ jobs:
             pyenv shell --unset
           done
         continue-on-error: false
+      - name: Run notebook tests
+        run: |
+          export PATH="$HOME/.pyenv/bin:$PATH"
+          eval "$(pyenv init -)"
+          pyenv shell 3.8
+          python -m pip install dist/*.whl --force-reinstall
+          jupyter nbconvert --to notebook --execute tests/test_data_insertion.ipynb --output test_data_insertion_output.ipynb
+          pyenv shell --unset
+        continue-on-error: false
       - name: Check and upload core files if present
         if: always()
         run: |

.github/workflows/build_linux_x86_wheels.yml

@@ -117,7 +117,7 @@ jobs:
             echo "Installing dependencies for Python $version"
             pyenv shell $version
             python -m pip install --upgrade pip
-            python -m pip install setuptools tox pandas pyarrow twine psutil deltalake wheel
+            python -m pip install setuptools tox pandas pyarrow twine psutil deltalake wheel jupyter nbconvert
             pyenv shell --unset
           done
       - name: Upgrade Rust toolchain
@@ -280,6 +280,15 @@ jobs:
             pyenv shell --unset
           done
         continue-on-error: false
+      - name: Run notebook tests
+        run: |
+          export PATH="$HOME/.pyenv/bin:$PATH"
+          eval "$(pyenv init -)"
+          pyenv shell 3.8
+          python -m pip install dist/*.whl --force-reinstall
+          jupyter nbconvert --to notebook --execute tests/test_data_insertion.ipynb --output test_data_insertion_output.ipynb
+          pyenv shell --unset
+        continue-on-error: false
       - name: Check and upload core files if present
         if: always()
         run: |

.github/workflows/build_macos_arm64_wheels.yml

@@ -102,7 +102,7 @@ jobs:
             echo "Installing dependencies for Python $version"
             pyenv shell $version
             python -m pip install --upgrade pip
-            python -m pip install setuptools wheel tox pandas pyarrow twine psutil deltalake wheel>=0.40.0
+            python -m pip install setuptools wheel tox pandas pyarrow twine psutil deltalake wheel>=0.40.0 jupyter nbconvert
             pyenv shell --unset
           done
       - name: Remove /usr/local/bin/python3
@@ -276,6 +276,15 @@ jobs:
             pyenv shell --unset
           done
         continue-on-error: false
+      - name: Run notebook tests
+        run: |
+          export PATH="$HOME/.pyenv/bin:$PATH"
+          eval "$(pyenv init -)"
+          pyenv shell 3.8
+          python -m pip install dist/*.whl --force-reinstall
+          jupyter nbconvert --to notebook --execute tests/test_data_insertion.ipynb --output test_data_insertion_output.ipynb
+          pyenv shell --unset
+        continue-on-error: false
       - name: Check and upload core files if present
         if: always()
         run: |

.github/workflows/build_macos_x86_wheels.yml

@@ -91,7 +91,7 @@ jobs:
             echo "Installing dependencies for Python $version"
             pyenv shell $version
             python -m pip install --upgrade pip
-            python -m pip install setuptools tox pandas pyarrow twine psutil deltalake wheel>=0.40.0
+            python -m pip install setuptools tox pandas pyarrow twine psutil deltalake wheel>=0.40.0 jupyter nbconvert
             pyenv shell --unset
           done
       - name: Remove /usr/local/bin/python3
@@ -277,6 +277,15 @@ jobs:
             pyenv shell --unset
           done
         continue-on-error: false
+      - name: Run notebook tests
+        run: |
+          export PATH="$HOME/.pyenv/bin:$PATH"
+          eval "$(pyenv init -)"
+          pyenv shell 3.8
+          python -m pip install dist/*.whl --force-reinstall
+          jupyter nbconvert --to notebook --execute tests/test_data_insertion.ipynb --output test_data_insertion_output.ipynb
+          pyenv shell --unset
+        continue-on-error: false
       - name: Check and upload core files if present
         if: always()
         run: |

src/Client/ClientBase.cpp

@@ -1777,6 +1777,21 @@ bool isStdinNotEmptyAndValid(ReadBuffer & std_in)
 {
     try
     {
+        // Use non-blocking check for stdin to avoid hanging
+        if (auto * fd_buffer = typeid_cast<ReadBufferFromFileDescriptor *>(&std_in))
+        {
+            int fd = fd_buffer->getFD();
+            if (fd == STDIN_FILENO)
+            {
+                int flags = fcntl(fd, F_GETFL);
+                if (flags != -1)
+                {
+                    fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+                    SCOPE_EXIT({ fcntl(fd, F_SETFL, flags); });
+                    return !std_in.eof();
+                }
+            }
+        }
         return !std_in.eof();
     }
     catch (const Exception & e)