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@CalvinKirs CalvinKirs commented Sep 13, 2024

Proposed changes

#39015

Some dependencies in these packages might conflict with the core, as the core already includes these two packages. Therefore, exclude Hive-related packages from the build.
Some dependencies in these packages might conflict with the core, as the core already includes these two packages. Therefore, exclude Hive-related packages from the build.
…tions (apache#39015)

## Proposed changes

### Description:

This issue proposes the addition of new features to the project,
including a deadlock detection tool and monitored lock implementations.
These features will help in identifying and debugging potential
deadlocks and monitoring lock usage.
Features:

#### AbstractMonitoredLock:

A monitored version of Lock that tracks and logs lock acquisition and
release times.
Functionality:
Overrides lock(), unlock(), tryLock(), and tryLock(long timeout,
TimeUnit unit) methods.
Logs information about lock acquisition time, release time, and any
failure to acquire the lock within the specified timeout.
##### eg
```log
2024-08-07 12:02:59  [ Thread-2:2006 ] - [ WARN ]  Thread ID: 12, Thread Name: Thread-2 - Lock held for 1912 ms, exceeding hold timeout of 1000 ms
Thread stack trace:
    at java.lang.Thread.getStackTrace(Thread.java:1564)
    at org.example.lock.AbstractMonitoredLock.afterUnlock(AbstractMonitoredLock.java:49)
    at org.example.lock.MonitoredReentrantLock.unlock(MonitoredReentrantLock.java:32)
    at org.example.ExampleService.timeout(ExampleService.java:17)
    at org.example.Main.lambda$test2$1(Main.java:39)
    at java.lang.Thread.run(Thread.java:750)
```

#### DeadlockCheckerTool:

Uses ScheduledExecutorService for periodic deadlock checks.
Logs deadlock information including thread names, states, lock info, and
stack traces.

**ThreadMXBean accesses thread information in the local JVM, which is
already in memory, so accessing it is less expensive than fetching data
from external resources such as disk or network.
Thread state cache: The JVM typically maintains a cache of thread
states, reducing the need for real-time calculations or additional data
processing.**
##### eg
```log
Thread Name: Thread-0
Thread State: WAITING
Lock Name: java.util.concurrent.locks.ReentrantLock$NonfairSync@1d653213
Lock Owner Name: Thread-1
Lock Owner Id: 12
Waited Time: -1
Blocked Time: -1
Lock Info: java.util.concurrent.locks.ReentrantLock$NonfairSync@1d653213
Blocked by: java.util.concurrent.locks.ReentrantLock$NonfairSync@1d653213
Stack Trace:
    at sun.misc.Unsafe.park(Native Method)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
    at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
    at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
    at org.example.lock.MonitoredReentrantLock.lock(MonitoredReentrantLock.java:22)
    at org.example.Main.lambda$testDeadLock$3(Main.java:79)
    at org.example.Main$$Lambda$1/1221555852.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:750)

2024-08-07 14:11:28  [ pool-1-thread-1:2001 ] - [ WARN ]  Deadlocks detected:
Thread Name: Thread-1
Thread State: WAITING
Lock Name: java.util.concurrent.locks.ReentrantLock$NonfairSync@13a2dfcf
Lock Owner Name: Thread-0
Lock Owner Id: 11
Waited Time: -1
Blocked Time: -1
Lock Info: java.util.concurrent.locks.ReentrantLock$NonfairSync@13a2dfcf
Blocked by: java.util.concurrent.locks.ReentrantLock$NonfairSync@13a2dfcf
Stack Trace:
    at sun.misc.Unsafe.park(Native Method)
    at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
    at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
    at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
    at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
    at org.example.lock.MonitoredReentrantLock.lock(MonitoredReentrantLock.java:22)
    at org.example.Main.lambda$testDeadLock$4(Main.java:93)
    at org.example.Main$$Lambda$2/1556956098.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:750)

```
##### benchmark
```
    @WarmUp(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
    @measurement(iterations = 2, time = 2, timeUnit = TimeUnit.SECONDS)
    @threads(1)

Benchmark                                                          Mode  Cnt       Score   Error   Units
LockBenchmark.testMonitoredLock                                   thrpt    2   15889.407          ops/ms
LockBenchmark.testMonitoredLock:·gc.alloc.rate                    thrpt    2     678.061          MB/sec
LockBenchmark.testMonitoredLock:·gc.alloc.rate.norm               thrpt    2      56.000            B/op
LockBenchmark.testMonitoredLock:·gc.churn.PS_Eden_Space           thrpt    2     668.249          MB/sec
LockBenchmark.testMonitoredLock:·gc.churn.PS_Eden_Space.norm      thrpt    2      55.080            B/op
LockBenchmark.testMonitoredLock:·gc.churn.PS_Survivor_Space       thrpt    2       0.075          MB/sec
LockBenchmark.testMonitoredLock:·gc.churn.PS_Survivor_Space.norm  thrpt    2       0.006            B/op
LockBenchmark.testMonitoredLock:·gc.count                         thrpt    2      20.000          counts
LockBenchmark.testMonitoredLock:·gc.time                          thrpt    2       6.000              ms
LockBenchmark.testNativeLock                                      thrpt    2  103130.635          ops/ms
LockBenchmark.testNativeLock:·gc.alloc.rate                       thrpt    2      ≈ 10⁻⁴          MB/sec
LockBenchmark.testNativeLock:·gc.alloc.rate.norm                  thrpt    2      ≈ 10⁻⁶            B/op
LockBenchmark.testNativeLock:·gc.count                            thrpt    2         ≈ 0          counts

    @WarmUp(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
    @measurement(iterations = 2, time = 2, timeUnit = TimeUnit.SECONDS)
    @threads(100)

Benchmark                                                          Mode  Cnt       Score   Error   Units
LockBenchmark.testMonitoredLock                                   thrpt    2   10994.606          ops/ms
LockBenchmark.testMonitoredLock:·gc.alloc.rate                    thrpt    2     488.508          MB/sec
LockBenchmark.testMonitoredLock:·gc.alloc.rate.norm               thrpt    2      56.002            B/op
LockBenchmark.testMonitoredLock:·gc.churn.PS_Eden_Space           thrpt    2     481.390          MB/sec
LockBenchmark.testMonitoredLock:·gc.churn.PS_Eden_Space.norm      thrpt    2      55.163            B/op
LockBenchmark.testMonitoredLock:·gc.churn.PS_Survivor_Space       thrpt    2       0.020          MB/sec
LockBenchmark.testMonitoredLock:·gc.churn.PS_Survivor_Space.norm  thrpt    2       0.002            B/op
LockBenchmark.testMonitoredLock:·gc.count                         thrpt    2      18.000          counts
LockBenchmark.testMonitoredLock:·gc.time                          thrpt    2       9.000              ms
LockBenchmark.testNativeLock                                      thrpt    2  558652.036          ops/ms
LockBenchmark.testNativeLock:·gc.alloc.rate                       thrpt    2       0.016          MB/sec
LockBenchmark.testNativeLock:·gc.alloc.rate.norm                  thrpt    2      ≈ 10⁻⁴            B/op
LockBenchmark.testNativeLock:·gc.count                            thrpt    2         ≈ 0          counts
```
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@CalvinKirs CalvinKirs closed this Sep 13, 2024
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