Group repository request during OWALPageChangesPortion.readData may block other threads

qtp1995359069-302 id=302 state=RUNNABLE
at java.nio.DirectByteBuffer.get(DirectByteBuffer.java:285)
at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OWALPageChangesPortion.readData(OWALPageChangesPortion.java:227)
at com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OWALPageChangesPortion.getIntValue(OWALPageChangesPortion.java:85)
at com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurablePage.getIntValue(ODurablePage.java:116)
at com.orientechnologies.orient.core.storage.impl.local.paginated.OClusterPage.doDefragmentation(OClusterPage.java:434)
at com.orientechnologies.orient.core.storage.impl.local.paginated.OClusterPage.appendRecord(OClusterPage.java:89)
at com.orientechnologies.orient.core.storage.impl.local.paginated.OPaginatedCluster.addEntry(OPaginatedCluster.java:2005)
at com.orientechnologies.orient.core.storage.impl.local.paginated.OPaginatedCluster.createSinglePageRecord(OPaginatedCluster.java:600)
at com.orientechnologies.orient.core.storage.impl.local.paginated.OPaginatedCluster.createDataRecord(OPaginatedCluster.java:486)
at com.orientechnologies.orient.core.storage.impl.local.paginated.OPaginatedCluster.createRecord(OPaginatedCluster.java:451)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.doCreateRecord(OAbstractPaginatedStorage.java:3032)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.commitEntry(OAbstractPaginatedStorage.java:3652)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.commit(OAbstractPaginatedStorage.java:1439)
at com.orientechnologies.orient.core.tx.OTransactionOptimistic.doCommit(OTransactionOptimistic.java:539)
at com.orientechnologies.orient.core.tx.OTransactionOptimistic.commit(OTransactionOptimistic.java:104)
at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2840)
at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2809)
at org.sonatype.nexus.repository.storage.StorageTxImpl.commit(StorageTxImpl.java:171)
at sun.reflect.GeneratedMethodAccessor336.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.sonatype.nexus.common.stateguard.SimpleMethodInvocation.proceed(SimpleMethodInvocation.java:53)
at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
at org.sonatype.nexus.common.stateguard.StateGuard$TransitionImpl.run(StateGuard.java:191)
at org.sonatype.nexus.common.stateguard.TransitionsInterceptor.invoke(TransitionsInterceptor.java:56)
at org.sonatype.nexus.common.stateguard.StateGuardAspect$1.invoke(StateGuardAspect.java:66)
at com.sun.proxy.$Proxy238.commit(Unknown Source)
at org.sonatype.nexus.transaction.TransactionalWrapper.proceedWithTransaction(TransactionalWrapper.java:67)
at org.sonatype.nexus.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:54)
at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:77)
at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55)
at org.sonatype.nexus.repository.maven.internal.MavenFacetImpl$$EnhancerByGuice$$a9e791b8.doPut(<generated>)
at org.sonatype.nexus.repository.maven.internal.MavenFacetImpl.put(MavenFacetImpl.java:200)
at org.sonatype.nexus.repository.maven.internal.MavenFacetUtils.putWithHashes(MavenFacetUtils.java:213)
at org.sonatype.nexus.repository.maven.internal.group.MavenGroupFacet.cache(MavenGroupFacet.java:158)
at org.sonatype.nexus.repository.maven.internal.group.MavenGroupFacet.mergeAndCache(MavenGroupFacet.java:135)
at org.sonatype.nexus.repository.maven.internal.group.MergingGroupHandler.doGet(MergingGroupHandler.java:98)
at org.sonatype.nexus.repository.group.GroupHandler.handle(GroupHandler.java:79)

qtp1995359069-325 id=325 state=WAITING
- waiting on <0x3e092391> (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
- locked <0x3e092391> (a java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
owned by qtp1995359069-302 id=302
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.doAcquireShared(AbstractQueuedSynchronizer.java:967)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1283)
at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:727)
at com.orientechnologies.common.concur.lock.OOneEntryPerKeyLockManager.acquireLock(OOneEntryPerKeyLockManager.java:169)
at com.orientechnologies.common.concur.lock.OOneEntryPerKeyLockManager.acquireLock(OOneEntryPerKeyLockManager.java:101)
at com.orientechnologies.orient.core.storage.impl.local.paginated.atomicoperations.OAtomicOperationsManager.acquireReadLock(OAtomicOperationsManager.java:519)
at com.orientechnologies.orient.core.index.sbtree.local.OSBTree.iterateEntriesBetween(OSBTree.java:765)
at com.orientechnologies.orient.core.index.engine.OSBTreeIndexEngine.iterateEntriesBetween(OSBTreeIndexEngine.java:185)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.doIterateIndexEntriesBetween(OAbstractPaginatedStorage.java:2064)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.iterateIndexEntriesBetween(OAbstractPaginatedStorage.java:2052)
at com.orientechnologies.orient.core.index.OIndexMultiValues.iterateEntriesBetween(OIndexMultiValues.java:275)
at com.orientechnologies.orient.core.index.OIndexAbstractDelegate.iterateEntriesBetween(OIndexAbstractDelegate.java:104)
at com.orientechnologies.orient.core.index.OIndexTxAwareMultiValue.iterateEntriesBetween(OIndexTxAwareMultiValue.java:339)
at com.orientechnologies.orient.core.sql.operator.OQueryOperatorEquals.executeIndexQuery(OQueryOperatorEquals.java:173)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.searchForIndexes(OCommandExecutorSQLSelect.java:2178)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.searchInClasses(OCommandExecutorSQLSelect.java:997)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLResultsetAbstract.assignTarget(OCommandExecutorSQLResultsetAbstract.java:209)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.assignTarget(OCommandExecutorSQLSelect.java:526)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.executeSearch(OCommandExecutorSQLSelect.java:508)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLSelect.execute(OCommandExecutorSQLSelect.java:484)
at com.orientechnologies.orient.core.sql.OCommandExecutorSQLDelegate.execute(OCommandExecutorSQLDelegate.java:74)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.executeCommand(OAbstractPaginatedStorage.java:2615)
at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.command(OAbstractPaginatedStorage.java:2561)
at com.orientechnologies.orient.core.command.OCommandRequestTextAbstract.execute(OCommandRequestTextAbstract.java:69)
at org.sonatype.nexus.repository.storage.MetadataNodeEntityAdapter.findByProperty(MetadataNodeEntityAdapter.java:148)
at org.sonatype.nexus.repository.storage.StorageTxImpl.findAssetWithProperty(StorageTxImpl.java:307)
at sun.reflect.GeneratedMethodAccessor340.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.sonatype.nexus.common.stateguard.SimpleMethodInvocation.proceed(SimpleMethodInvocation.java:53)
at org.sonatype.nexus.common.stateguard.MethodInvocationAction.run(MethodInvocationAction.java:39)
at org.sonatype.nexus.common.stateguard.StateGuard$GuardImpl.run(StateGuard.java:270)
at org.sonatype.nexus.common.stateguard.GuardedInterceptor.invoke(GuardedInterceptor.java:53)
at org.sonatype.nexus.common.stateguard.StateGuardAspect$1.invoke(StateGuardAspect.java:63)
at com.sun.proxy.$Proxy238.findAssetWithProperty(Unknown Source)
at org.sonatype.nexus.repository.maven.internal.MavenFacetUtils.findAsset(MavenFacetUtils.java:132)
at org.sonatype.nexus.repository.maven.internal.MavenFacetImpl.get(MavenFacetImpl.java:174)
at org.sonatype.nexus.repository.maven.internal.MavenFacetImpl$$EnhancerByGuice$$a9e791b8.CGLIB$get$10(<generated>)
at org.sonatype.nexus.repository.maven.internal.MavenFacetImpl$$EnhancerByGuice$$a9e791b8$$FastClassByGuice$$b1b9dd3a.invoke(<generated>)
at com.google.inject.internal.cglib.proxy.$MethodProxy.invokeSuper(MethodProxy.java:228)
at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:76)
at org.sonatype.nexus.transaction.TransactionalWrapper.proceedWithTransaction(TransactionalWrapper.java:56)
at org.sonatype.nexus.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:54)
at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:77)
at com.google.inject.internal.InterceptorStackCallback.intercept(InterceptorStackCallback.java:55)
at org.sonatype.nexus.repository.maven.internal.MavenFacetImpl$$EnhancerByGuice$$a9e791b8.get(<generated>)
at org.sonatype.nexus.repository.maven.internal.proxy.MavenProxyFacet.getCachedContent(MavenProxyFacet.java:58)
at org.sonatype.nexus.repository.proxy.ProxyFacetSupport.get(ProxyFacetSupport.java:166)
at org.sonatype.nexus.repository.proxy.ProxyHandler.handle(ProxyHandler.java:49)