33 lines
1.2 KiB
Markdown
33 lines
1.2 KiB
Markdown
### Problem
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When using a thread pool, `TraceSegment` data in a thread cannot be reported and there are memory data that cannot be recycled (memory leaks).
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### Example
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``` java
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ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
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executor.setThreadFactory(r -> new Thread(RunnableWrapper.of(r)));
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```
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### Reason
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* Worker threads are enhanced when using the thread pool.
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* Based on the design of the SkyWalking Java Agent, when tracing a cross thread, you must enhance the task thread.
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### Resolution
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* When using `Thread Schedule Framework`:
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See SkyWalking Thread Schedule Framework at [SkyWalking Java agent supported list](../setup/service-agent/java-agent/Supported-list.md), such as Spring FrameWork @Async, which can implement tracing without any modification.
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* When using `Custom Thread Pool`:
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Enhance the task thread with the following code.
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```java
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ExecutorService executorService = Executors.newFixedThreadPool(1);
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executorService.execute(RunnableWrapper.of(new Runnable() {
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@Override public void run() {
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//your code
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}
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}));
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```
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See [across thread solution APIs](../setup/service-agent/java-agent/Application-toolkit-trace-cross-thread.md) for more use cases.
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