Hi all,
I've seen this happen quite a few times while I've been evaluating 1.7.x
(latest 1.7.4). I didn't report it because I thought it was related to the
shutdown issue that was fixed in 1.7.4, but it still happens with the
latest version.
What happens is that periodically when I start a process that tries to load
graph data via the Java API, I get the following error appearing over and
over in the logs and an exception occurs in the program
-1
-> java.util.ArrayList.elementData(ArrayList.java:400)
-> java.util.ArrayList.get(ArrayList.java:413)
->
com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OWriteAheadLog.flush(OWriteAheadLog.java:733)
->
com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache.flushPage(OWOWCache.java:1082)
->
com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache.access$1000(OWOWCache.java:67)
->
com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache$PeriodicFlushTask.iterateBySubRing(OWOWCache.
java:291)
->
com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache$PeriodicFlushTask.flushRing(OWOWCache.java:24
6)
->
com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache$PeriodicFlushTask.run(OWOWCache.java:222)
-> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
-> java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
->
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
->
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
->
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
->
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
-> java.lang.Thread.run(Thread.java:744)
If I restart the database and the client, and try to run my process again,
I get the following exception and basically the database is FUBAR:
Exception in thread "main"
com.orientechnologies.orient.core.exception.ODatabaseException: Error on
retrieving record #12:0 (cluster: person)
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.read(ODatabaseRaw.java:252)
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordAbstract.executeReadRecord(ODatabaseRecordAbstract.java:1017)
at
com.orientechnologies.orient.core.tx.OTransactionNoTx.loadRecord(OTransactionNoTx.java:65)
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordTx.load(ODatabaseRecordTx.java:264)
at
com.orientechnologies.orient.core.db.record.ODatabaseRecordTx.load(ODatabaseRecordTx.java:40)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.executeSearchRecord(OCommandExecutorSQLSelect.java:437)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.fetchFromTarget(OCommandExecutorSQLSelect.java:918)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.fetchValuesFromIndexCursor(OCommandExecutorSQLSelect.java:1183)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.searchForIndexes(OCommandExecutorSQLSelect.java:1105)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.searchInClasses(OCommandExecutorSQLSelect.java:647)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLResultsetAbstract.assignTarget(OCommandExecutorSQLResultsetAbstract.java:134)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.assignTarget(OCommandExecutorSQLSelect.java:402)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.executeSearch(OCommandExecutorSQLSelect.java:386)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.execute(OCommandExecutorSQLSelect.java:358)
at
com.orientechnologies.orient.core.sql.OCommandExecutorSQLDelegate.execute(OCommandExecutorSQLDelegate.java:60)
at
com.orientechnologies.orient.core.storage.OStorageEmbedded.executeCommand(OStorageEmbedded.java:94)
at
com.orientechnologies.orient.core.storage.OStorageEmbedded.command(OStorageEmbedded.java:83)
at
com.orientechnologies.orient.core.command.OCommandRequestTextAbstract.execute(OCommandRequestTextAbstract.java:59)
at
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.command(ONetworkProtocolBinary.java:1181)
at
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.executeRequest(ONetworkProtocolBinary.java:340)
at
com.orientechnologies.orient.server.network.protocol.binary.OBinaryNetworkProtocolAbstract.execute(OBinaryNetworkProtocolAbstract.java:169)
at
com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:45)
Caused by: com.orientechnologies.orient.core.exception.ODatabaseException:
Error during data decompression.
at
com.orientechnologies.orient.core.compression.impl.OSnappyCompression.uncompress(OSnappyCompression.java:54)
at
com.orientechnologies.orient.core.storage.impl.local.paginated.OPaginatedCluster.readRecord(OPaginatedCluster.java:635)
at
com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage.readRecord(OLocalPaginatedStorage.java:1481)
at
com.orientechnologies.orient.core.storage.impl.local.paginated.OLocalPaginatedStorage.readRecord(OLocalPaginatedStorage.java:745)
at
com.orientechnologies.orient.core.db.raw.ODatabaseRaw.read(ODatabaseRaw.java:246)
... 21 more
Caused by: java.io.IOException: FAILED_TO_UNCOMPRESS(5)
at org.xerial.snappy.SnappyNative.throw_error(SnappyNative.java:84)
at org.xerial.snappy.SnappyNative.rawUncompress(Native Method)
at org.xerial.snappy.Snappy.rawUncompress(Snappy.java:444)
at org.xerial.snappy.Snappy.uncompress(Snappy.java:480)
at
com.orientechnologies.orient.core.compression.impl.OSnappyCompression.uncompress(OSnappyCompression.java:50)
... 25 more
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