linux - JCR/Jackrabit/Derby - 在 Linux 上恢复版本时使用二进制数据的 IO 速度慢

Question

我在默认节点上存储了二进制数据 (3mb)。更改它们并再次保存。后来我想找回旧版本，所以我使用恢复功能。在 Windows 上，它以正常速度运行(最长 1 秒)。但在 Linux 上大约需要 20 秒。

有人知道是什么让它这么慢吗？这里是从慢点开始的堆栈跟踪:

Daemon Thread [ajp-bio-8011-exec-40] (Evaluating)   
RandomAccessFile.writeBytes(byte[], int, int) line: not available [native method]   
DirRandomAccessFile4(RandomAccessFile).write(byte[], int, int) line: 466    
LogAccessFile.writeToLog(byte[], int, int, long) line: not available    
LogAccessFile.flushDirtyBuffers() line: not available [local variables unavailable] 
LogAccessFile.switchLogBuffer() line: not available 
LogAccessFile.reserveSpaceForChecksum(int, long, long) line: not available  
LogToFile.appendLogRecord(byte[], int, int, byte[], int, int) line: not available   
FileLogger.logAndDo(RawTransaction, Loggable) line: not available   
Xact.logAndDo(Loggable) line: not available 
LoggableActions.doAction(RawTransaction, BasePage, Loggable) line: not available    
LoggableActions.actionInsert(RawTransaction, BasePage, int, int, Object[], FormatableBitSet, LogicalUndo, byte, int, boolean, int, DynamicByteArrayOutputStream, int, int) line: not available  
StoredPage(BasePage).insertLongColumn(BasePage, LongColumnException, byte) line: not available  
StoredPage(BasePage).insertAllowOverflow(int, Object[], FormatableBitSet, int, byte, int, RecordHandle) line: not available 
StoredPage(BasePage).insert(Object[], FormatableBitSet, byte, int) line: not available  
HeapController.doInsert(DataValueDescriptor[]) line: not available  
HeapController.insertAndFetchLocation(DataValueDescriptor[], RowLocation) line: not available   
RowChangerImpl.insertRow(ExecRow) line: not available   
InsertResultSet.normalInsertCore(LanguageConnectionContext, boolean) line: not available    
InsertResultSet.open() line: not available  
GenericPreparedStatement.executeStmt(Activation, boolean, long) line: not available 
GenericPreparedStatement.execute(Activation, long) line: not available  
EmbedPreparedStatement40(EmbedStatement).executeStatement(Activation, boolean, boolean) line: not available 
EmbedPreparedStatement40(EmbedPreparedStatement).executeStatement(Activation, boolean, boolean) line: not available 
EmbedPreparedStatement40(EmbedPreparedStatement).execute() line: not available  
PoolablePreparedStatement(DelegatingPreparedStatement).execute() line: 172  
DelegatingPreparedStatement.execute() line: 172 
DelegatingPreparedStatement.execute() line: 172 
DerbyConnectionHelper(ConnectionHelper).execute(PreparedStatement, Object[]) line: 473  
DerbyConnectionHelper(ConnectionHelper).reallyExec(String, Object...) line: 303 
ConnectionHelper$1.call() line: 285 
ConnectionHelper$1.call() line: 281 
ConnectionHelper$1(ConnectionHelper$RetryManager<T>).doTry() line: 486  
DerbyConnectionHelper(ConnectionHelper).exec(String, Object...) line: 281   
BundleDbPersistenceManager$DbBlobStore.put(String, InputStream, long) line: 1214    
BundleWriter.writeState(NodePropBundle$PropertyEntry) line: 240 
BundleWriter.writeBundle(NodePropBundle) line: 132  
BundleBinding.writeBundle(OutputStream, NodePropBundle) line: 164   
DerbyPersistenceManager(BundleDbPersistenceManager).storeBundle(NodePropBundle) line: 885   
DerbyPersistenceManager(AbstractBundlePersistenceManager).putBundle(NodePropBundle) line: 769   
DerbyPersistenceManager(AbstractBundlePersistenceManager).storeInternal(ChangeLog) line: 686    
DerbyPersistenceManager(AbstractBundlePersistenceManager).store(ChangeLog) line: 563    
DerbyPersistenceManager(BundleDbPersistenceManager).store(ChangeLog) line: 477  
SharedItemStateManager$Update.end() line: 770   
SharedItemStateManager.update(ChangeLog, EventStateCollectionFactory) line: 1492    
XAItemStateManager(LocalItemStateManager).update(ChangeLog) line: 400   
XAItemStateManager.update(ChangeLog) line: 354  
XAItemStateManager(LocalItemStateManager).update() line: 375    
VersionManagerImplBase$WriteOperation.save() line: 470  
VersionManagerImpl$6.perform(SessionContext) line: 253  
SessionState.perform(SessionOperation<T>) line: 216 
VersionManagerImpl.perform(SessionOperation<T>) line: 96    
VersionManagerImpl.restore(Version[], boolean) line: 225    
VersionManagerImpl.restore(Version, boolean) line: 217  

我的配置你能指点我一个新的吗？:

<?xml version="1.0"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!DOCTYPE Repository PUBLIC "-//The Apache Software Foundation//DTD Jackrabbit 1.5//EN"
"http://jackrabbit.apache.org/dtd/repository-1.5.dtd">
<!-- Example Repository Configuration File
Used by
- org.apache.jackrabbit.core.config.RepositoryConfigTest.java
-
-->
<Repository>
    <!--
    virtual file system where the repository stores global state
    (e.g. registered namespaces, custom node types, etc.)
    -->
    <FileSystem class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
        <param name="path" value="${rep.home}/repository"/>
    </FileSystem>
    <!--
    security configuration
    -->
    <Security appName="Jackrabbit">
        <!--
        security manager:
        class: FQN of class implementing the JackrabbitSecurityManager interface
        -->
        <SecurityManager class="org.apache.jackrabbit.core.security.simple.SimpleSecurityManager" workspaceName="security">
            <!--
            workspace access:
            class: FQN of class implementing the WorkspaceAccessManager interface
            -->
            <!-- <WorkspaceAccessManager class="..."/> -->
            <!-- <param name="config" value="${rep.home}/security.xml"/> -->
        </SecurityManager>
        <!--
        access manager:
        class: FQN of class implementing the AccessManager interface
        -->
        <AccessManager class="org.apache.jackrabbit.core.security.simple.SimpleAccessManager">
            <!-- <param name="config" value="${rep.home}/access.xml"/> -->
        </AccessManager>
        <LoginModule class="org.apache.jackrabbit.core.security.simple.SimpleLoginModule">
            <!--
            anonymous user name ('anonymous' is the default value)
            -->
            <param name="anonymousId" value="anonymous"/>
            <!--
            administrator user id (default value if param is missing is 'admin')
            -->
            <param name="adminId" value="admin"/>
        </LoginModule>
    </Security>
    <!--
    location of workspaces root directory and name of default workspace
    -->
    <Workspaces rootPath="${rep.home}/workspaces" defaultWorkspace="default"/>
    <!--
    workspace configuration template:
    used to create the initial workspace if there's no workspace yet
    -->
    <Workspace name="${wsp.name}">
        <!--
        virtual file system of the workspace:
        class: FQN of class implementing the FileSystem interface
        -->
        <FileSystem class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
            <param name="path" value="${wsp.home}"/>
        </FileSystem>
        <!--
        persistence manager of the workspace:
        class: FQN of class implementing the PersistenceManager interface
        -->
        <PersistenceManager class="org.apache.jackrabbit.core.persistence.bundle.DerbyPersistenceManager">
            <param name="url" value="jdbc:derby:${wsp.home}/db;create=true"/>
            <param name="schemaObjectPrefix" value="${wsp.name}_"/>
        </PersistenceManager>
        <!--
        Search index and the file system it uses.
        class: FQN of class implementing the QueryHandler interface
        -->
        <SearchIndex class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
            <param name="path" value="${wsp.home}/index"/>
            <param name="textFilterClasses" value="org.apache.jackrabbit.extractor.PlainTextExtractor,org.apache.jackrabbit.extractor.MsWordTextExtractor,org.apache.jackrabbit.extractor.MsExcelTextExtractor,org.apache.jackrabbit.extractor.MsPowerPointTextExtractor,org.apache.jackrabbit.extractor.PdfTextExtractor,org.apache.jackrabbit.extractor.OpenOfficeTextExtractor,org.apache.jackrabbit.extractor.RTFTextExtractor,org.apache.jackrabbit.extractor.HTMLTextExtractor,org.apache.jackrabbit.extractor.XMLTextExtractor"/>
            <param name="extractorPoolSize" value="2"/>
            <param name="supportHighlighting" value="true"/>
        </SearchIndex>
    </Workspace>
    <!--
    Configures the versioning
    -->
    <Versioning rootPath="${rep.home}/version">
        <!--
        Configures the filesystem to use for versioning for the respective
        persistence manager
        -->
        <FileSystem class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
            <param name="path" value="${rep.home}/version" />
        </FileSystem>
        <!--
        Configures the persistence manager to be used for persisting version state.
        Please note that the current versioning implementation is based on
        a 'normal' persistence manager, but this could change in future
        implementations.
        -->
        <PersistenceManager class="org.apache.jackrabbit.core.persistence.bundle.DerbyPersistenceManager">
            <param name="url" value="jdbc:derby:${rep.home}/version/db;create=true"/>
            <param name="schemaObjectPrefix" value="version_"/>
        </PersistenceManager>
    </Versioning>
    <!--
    Search index for content that is shared repository wide
    (/jcr:system tree, contains mainly versions)

    <SearchIndex class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
        <param name="path" value="${rep.home}/repository/index"/>
        <param name="textFilterClasses" value="org.apache.jackrabbit.extractor.PlainTextExtractor,org.apache.jackrabbit.extractor.MsWordTextExtractor,org.apache.jackrabbit.extractor.MsExcelTextExtractor,org.apache.jackrabbit.extractor.MsPowerPointTextExtractor,org.apache.jackrabbit.extractor.PdfTextExtractor,org.apache.jackrabbit.extractor.OpenOfficeTextExtractor,org.apache.jackrabbit.extractor.RTFTextExtractor,org.apache.jackrabbit.extractor.HTMLTextExtractor,org.apache.jackrabbit.extractor.XMLTextExtractor"/>
        <param name="extractorPoolSize" value="2"/>
        <param name="supportHighlighting" value="true"/>
    </SearchIndex>
    -->
</Repository>

正确的配置是:

<?xml version="1.0"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!DOCTYPE Repository PUBLIC "-//The Apache Software Foundation//DTD Jackrabbit 1.5//EN"
"http://jackrabbit.apache.org/dtd/repository-1.5.dtd">
<!-- Example Repository Configuration File
Used by
- org.apache.jackrabbit.core.config.RepositoryConfigTest.java
-
-->
<Repository>
    <!--
    virtual file system where the repository stores global state
    (e.g. registered namespaces, custom node types, etc.)
    -->
    <FileSystem class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
        <param name="path" value="${rep.home}/repository"/>
    </FileSystem>

    <!--
        data store configuration
    -->
    <DataStore class="org.apache.jackrabbit.core.data.FileDataStore"/>

    <!--
    security configuration
    -->
    <Security appName="Jackrabbit">
        <!--
        security manager:
        class: FQN of class implementing the JackrabbitSecurityManager interface
        -->
        <SecurityManager class="org.apache.jackrabbit.core.security.simple.SimpleSecurityManager" workspaceName="security">
            <!--
            workspace access:
            class: FQN of class implementing the WorkspaceAccessManager interface
            -->
            <!-- <WorkspaceAccessManager class="..."/> -->
            <!-- <param name="config" value="${rep.home}/security.xml"/> -->
        </SecurityManager>
        <!--
        access manager:
        class: FQN of class implementing the AccessManager interface
        -->
        <AccessManager class="org.apache.jackrabbit.core.security.simple.SimpleAccessManager">
            <!-- <param name="config" value="${rep.home}/access.xml"/> -->
        </AccessManager>
        <LoginModule class="org.apache.jackrabbit.core.security.simple.SimpleLoginModule">
            <!--
            anonymous user name ('anonymous' is the default value)
            -->
            <param name="anonymousId" value="anonymous"/>
            <!--
            administrator user id (default value if param is missing is 'admin')
            -->
            <param name="adminId" value="admin"/>
        </LoginModule>
    </Security>
    <!--
    location of workspaces root directory and name of default workspace
    -->
    <Workspaces rootPath="${rep.home}/workspaces" defaultWorkspace="default"/>
    <!--
    workspace configuration template:
    used to create the initial workspace if there's no workspace yet
    -->
    <Workspace name="${wsp.name}">
        <!--
        virtual file system of the workspace:
        class: FQN of class implementing the FileSystem interface
        -->
        <FileSystem class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
            <param name="path" value="${wsp.home}"/>
        </FileSystem>
        <!--
        persistence manager of the workspace:
        class: FQN of class implementing the PersistenceManager interface
        -->
        <PersistenceManager class="org.apache.jackrabbit.core.persistence.bundle.DerbyPersistenceManager">
            <param name="url" value="jdbc:derby:${wsp.home}/db;create=true"/>
            <param name="schemaObjectPrefix" value="${wsp.name}_"/>
        </PersistenceManager>
        <!--
        Search index and the file system it uses.
        class: FQN of class implementing the QueryHandler interface
        -->
        <SearchIndex class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
            <param name="path" value="${wsp.home}/index"/>
            <param name="textFilterClasses" value="org.apache.jackrabbit.extractor.PlainTextExtractor,org.apache.jackrabbit.extractor.MsWordTextExtractor,org.apache.jackrabbit.extractor.MsExcelTextExtractor,org.apache.jackrabbit.extractor.MsPowerPointTextExtractor,org.apache.jackrabbit.extractor.PdfTextExtractor,org.apache.jackrabbit.extractor.OpenOfficeTextExtractor,org.apache.jackrabbit.extractor.RTFTextExtractor,org.apache.jackrabbit.extractor.HTMLTextExtractor,org.apache.jackrabbit.extractor.XMLTextExtractor"/>
            <param name="extractorPoolSize" value="2"/>
            <param name="supportHighlighting" value="true"/>
        </SearchIndex>
    </Workspace>
    <!--
    Configures the versioning
    -->
    <Versioning rootPath="${rep.home}/version">
        <!--
        Configures the filesystem to use for versioning for the respective
        persistence manager
        -->
        <FileSystem class="org.apache.jackrabbit.core.fs.local.LocalFileSystem">
            <param name="path" value="${rep.home}/version" />
        </FileSystem>
        <!--
        Configures the persistence manager to be used for persisting version state.
        Please note that the current versioning implementation is based on
        a 'normal' persistence manager, but this could change in future
        implementations.
        -->
        <PersistenceManager class="org.apache.jackrabbit.core.persistence.bundle.DerbyPersistenceManager">
            <param name="url" value="jdbc:derby:${rep.home}/version/db;create=true"/>
            <param name="schemaObjectPrefix" value="version_"/>
        </PersistenceManager>
    </Versioning>
    <!--
    Search index for content that is shared repository wide
    (/jcr:system tree, contains mainly versions)

    <SearchIndex class="org.apache.jackrabbit.core.query.lucene.SearchIndex">
        <param name="path" value="${rep.home}/repository/index"/>
        <param name="textFilterClasses" value="org.apache.jackrabbit.extractor.PlainTextExtractor,org.apache.jackrabbit.extractor.MsWordTextExtractor,org.apache.jackrabbit.extractor.MsExcelTextExtractor,org.apache.jackrabbit.extractor.MsPowerPointTextExtractor,org.apache.jackrabbit.extractor.PdfTextExtractor,org.apache.jackrabbit.extractor.OpenOfficeTextExtractor,org.apache.jackrabbit.extractor.RTFTextExtractor,org.apache.jackrabbit.extractor.HTMLTextExtractor,org.apache.jackrabbit.extractor.XMLTextExtractor"/>
        <param name="extractorPoolSize" value="2"/>
        <param name="supportHighlighting" value="true"/>
    </SearchIndex>
    -->
</Repository>

Answer 1

问题似乎是您使用的是旧配置文件，其中未使用 FileDataStore。要使用它，您可以:

• 如 Jackrabbit Wiki page for the DataStore 中所述，在现有 repository.xml 中配置 FileDataStore (这可能需要更改文档类型)，或者

• 如 Jackrabbit Wiki page for Backup and Migration 中所述，将您的存储库迁移到新版本的 Jackrabbit。 .

迁移数据的好处是现有的二进制文件也被移动到 FileDataStore，这应该会减少存储库的大小。