java.lang.IllegalAccessError: WAL not empty; commit first, than compact
java.lang.IllegalAccessError: WAL not empty; commit first, than compact
我把 "localDb.commit();" 放在每个 "localDb.compact();" 之前，但仍然得到异常：
Exception in thread "Thread-0" java.lang.IllegalAccessError: WAL not
empty; commit first, than compact at
org.mapdb.StoreWAL.compactPreUnderLock(StoreWAL.java:1100) at
org.mapdb.StoreDirect.compact(StoreDirect.java:810) at
org.mapdb.EngineWrapper.compact(EngineWrapper.java:130) at
org.mapdb.EngineWrapper.compact(EngineWrapper.java:130) at
org.mapdb.DB.compact(DB.java:1626)
我的commit()、compact()位于Thread.run()，我的DBMaster配置是：
DB localDb = DBMaker.newFileDB(new File(filename)).closeOnJvmShutdown().make();
存储大小：471M，包括*.compact、*.compact.p、*.p、*.t
java-版本：java版本“1.8.0_11”
uname -r: 2.6.32-279.el6.x86_64
谢谢！
https://github.com/jankotek/MapDB/issues/463
I found the reason via my colleague's code review. It's my fault that
I put commit() / compact() into a consumer thread, and queue.offer()
into a producer thread, which called by a servlet; so "queue.offer()"
may be called between "commit()" and "compact()".
我把 "localDb.commit();" 放在每个 "localDb.compact();" 之前，但仍然得到异常：
Exception in thread "Thread-0" java.lang.IllegalAccessError: WAL not empty; commit first, than compact at org.mapdb.StoreWAL.compactPreUnderLock(StoreWAL.java:1100) at org.mapdb.StoreDirect.compact(StoreDirect.java:810) at org.mapdb.EngineWrapper.compact(EngineWrapper.java:130) at org.mapdb.EngineWrapper.compact(EngineWrapper.java:130) at org.mapdb.DB.compact(DB.java:1626)
我的commit()、compact()位于Thread.run()，我的DBMaster配置是：
DB localDb = DBMaker.newFileDB(new File(filename)).closeOnJvmShutdown().make();
存储大小：471M，包括*.compact、*.compact.p、*.p、*.t java-版本：java版本“1.8.0_11” uname -r: 2.6.32-279.el6.x86_64
谢谢！
https://github.com/jankotek/MapDB/issues/463
I found the reason via my colleague's code review. It's my fault that I put commit() / compact() into a consumer thread, and queue.offer() into a producer thread, which called by a servlet; so "queue.offer()" may be called between "commit()" and "compact()".