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dain / leveldb

Port of LevelDB to Java
Apache License 2.0
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NullPointerException in VersionSet #103

Open liukun4515 opened 5 years ago

liukun4515 commented 5 years ago 
java.lang.NullPointerException: null
    at org.iq80.leveldb.impl.VersionSet.numberOfFilesInLevel(VersionSet.java:233) ~[leveldb-0.11.jar:0.11]
    at org.iq80.leveldb.impl.DbImpl.makeRoomForWrite(DbImpl.java:824) ~[leveldb-0.11.jar:0.11]
    at org.iq80.leveldb.impl.DbImpl.writeInternal(DbImpl.java:688) ~[leveldb-0.11.jar:0.11]
    at org.iq80.leveldb.impl.DbImpl.write(DbImpl.java:670) ~[leveldb-0.11.jar:0.11]

Some error may occur when write the leveldb with the multi-thread.

pcmind commented 5 years ago

Are you not closing the DB concurrently?

liukun4515 commented 5 years ago

Are you not closing the DB concurrently?

Thank you for your reply. yes, I close the db concurrently.