fix: enhance SSH command handling for local hosts in clean_tmp and run_thread functions

[tomchon]

This pull request improves the handling of local and remote hosts in the tests/parallel_test/run.sh script, ensuring commands are executed appropriately based on the host type. It introduces a new helper function, is_local_host(), to determine if a host is local, and updates several functions to use this logic for cleaner and more reliable execution.

jira:https://jira.taosdata.com:18080/browse/TD-35700

Enhancements for handling local vs. remote hosts:

• Added is_local_host() helper function: This function checks if a given host is local by comparing it against common local host identifiers (127.0.0.1, localhost, hostname, etc.).
• Updated clean_tmp() function: Incorporated is_local_host() to determine whether to execute commands directly or via SSH, ensuring proper handling of local hosts.
• Improved run_thread() function:
  • Adjusted command execution logic to differentiate between local and remote hosts for logging, copying files, and executing scripts. [1] [2] [3]
  • Replaced direct command execution with bash -c for consistency and better handling of complex commands. [1] [2] [3]

[tomchon]

遇到报错如下，这种一般就是run_container.sh 的参数中有空格之类的，导致识别参数识别错误。这次就是-c 后面跟的是python 的命令行，使用 eval $cmd 这种执行模式就能避免这类问题。如果是加上了远程执行，还是只能使用 $cmd

192.168.1.52-26 order:1, redo:2 task:,,y,army,./pytest.sh python3 ./test.py -f cluster/snapshot.py -N 3 -L 3 -D 2
2025-06-20 19:04:04
/var/lib/jenkins/workspace/TDinternal/community/tests/parallel_test/run_container.sh
	 -w work dir
	 -d execution dir
	 -c command
	 -t thread number
	 -e enterprise edition
	 -o default timeout value
	 -s build with sanitizer
	 -h help
execute time: 0s
192.168.1.52 2025-06-20 19:04:04 exit code:1

192.168.1.52 total time: 0s

[Copilot]

Pull Request Overview

This pull request improves the handling of local and remote hosts in the test scripts by introducing a new helper function (is_local_host) and updating the command execution logic for consistency. Key changes include:

• Adding the is_local_host() helper to distinguish between local and remote hosts.
• Refactoring clean_tmp() and run_thread() functions to use bash -c for command execution and properly construct SSH/scp commands.
• Adjusting test cases and CI scripts to match updated expectations and improve environmental setup.

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/parallel_test/run.sh	Introduces is_local_host() and updates SSH command handling in clean_tmp() and run_thread().
test/ci/run.sh	Adjusts the redo condition for thread runs with a configurable retry limit.
test/ci/cases.task	Updates test flags and rerun indicators for various test cases.
test/cases/50-Others/01-Valgrind/test_valgrind_checkerror1.py	Updates expected row count in valgrind check.
test/cases/22-Show/test_show_basic.py	Updates expected row count in show test cases.
packaging/tools/install_spec.sh	Modifies environment variable setup to remove early returns and ensure both PATH and LD_LIBRARY_PATH are updated.

Comments suppressed due to low confidence (1)

packaging/tools/install_spec.sh:1033

• With the removal of the early return statements, verify that appending both PATH and LD_LIBRARY_PATH entries does not lead to duplicate entries in ~/.bashrc on subsequent runs.

  if grep -q "export PATH=$bin_link_dir:\$PATH" ~/.bashrc; then