org.mapdb.DBException$PointerChecksumBroken. [2.0-beta13]

[Senhui Lee]

Hi, guys.  There I had used the MapDB to stored byte array data in hash set data struct. But some times there had throws an strange exception. see below:

org.mapdb.DBException$PointerChecksumBroken: Bit parity in file pointer is broken, data possibly corrupted.
 at org.mapdb.DataIO.parity4Get(DataIO.java:1149)
 at org.mapdb.StoreCached.loadLongStackPage(StoreCached.java:248)
 at org.mapdb.StoreCached.longStackTake(StoreCached.java:179)
 at org.mapdb.StoreDirect.freeRecidTake(StoreDirect.java:1644)
 at org.mapdb.StoreDirect.preallocate(StoreDirect.java:595)
 at org.mapdb.StoreCached.put(StoreCached.java:501)
 at org.mapdb.Engine$CloseOnJVMShutdown.put(Engine.java:450)
 at org.mapdb.HTreeMap.putNew(HTreeMap.java:978)
 at org.mapdb.HTreeMap.putInner(HTreeMap.java:953)
 at org.mapdb.HTreeMap.put(HTreeMap.java:883)
 at org.mapdb.HTreeMap$KeySet.add(HTreeMap.java:1278)
 at so.sao.analytics.sdk.mapdb.MessageStoreDB.push(MessageStoreDB.java:95)

By now my resolve way is delete the MapDB build filed, then restart server again. It's run well. So strange. My MapDB work code like below:

DB db = DBMaker.fileDB(dbFile)
                .asyncWriteEnable()
                .transactionDisable()
                .closeOnJvmShutdown()
                .make();


Set<byte[]> messages = db.hashSet(topicName, Serializer.BYTE_ARRAY);


messages.add(byte[]); // also the exception had happened here.

Also I had other question, how can I use one MapDB file in multi threads. Just closed the locked type. all right?

So is there some thing wrong in my code. Wait for you reply. Thanks.

[Dmitriy Shabanov]

What version do you use?

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Dmitriy Shabanov

[Senhui Lee]

the beta version, it's number 2.0-beta13.

在 2016年4月20日星期三 UTC+8下午4:06:59，Dmitriy Shabanov写道：

[Dmitriy Shabanov]

It's not supported anymore.

On Wed, Apr 20, 2016 at 12:59 PM, Senhui Lee <elka...@gmail.com> wrote:

the beta version, it's number 2.0-beta13.

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Dmitriy Shabanov