分布式调度框架。
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<configuration>
<property>
<name>spring.datasource.initialSize</name>
<value>5</value>
<description>
Init connection number
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.minIdle</name>
<value>5</value>
<description>
Min connection number
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.maxActive</name>
<value>50</value>
<description>
Max connection number
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.maxWait</name>
<value>60000</value>
<description>
Max wait time for get a connection in milliseconds.
If configuring maxWait, fair locks are enabled by default and concurrency efficiency decreases.
If necessary, unfair locks can be used by configuring the useUnfairLock attribute to true.
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.timeBetweenEvictionRunsMillis</name>
<value>60000</value>
<description>
Milliseconds for check to close free connections
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.timeBetweenConnectErrorMillis</name>
<value>60000</value>
<description>
The Destroy thread detects the connection interval and closes the physical connection in milliseconds
if the connection idle time is greater than or equal to minEvictableIdleTimeMillis.
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.minEvictableIdleTimeMillis</name>
<value>300000</value>
<description>
The longest time a connection remains idle without being evicted, in milliseconds
</description>
<value-attributes>
<type>int</type>
</value-attributes>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.validationQuery</name>
<value>SELECT 1</value>
<description>
The SQL used to check whether the connection is valid requires a query statement.
If validation Query is null, testOnBorrow, testOnReturn, and testWhileIdle will not work.
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.validationQueryTimeout</name>
<value>3</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description>
Check whether the connection is valid for timeout, in seconds
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.testWhileIdle</name>
<value>true</value>
<value-attributes>
<type>boolean</type>
</value-attributes>
<description>
When applying for a connection,
if it is detected that the connection is idle longer than time Between Eviction Runs Millis,
validation Query is performed to check whether the connection is valid
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.testOnBorrow</name>
<value>true</value>
<value-attributes>
<type>boolean</type>
</value-attributes>
<description>
Execute validation to check if the connection is valid when applying for a connection
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.testOnReturn</name>
<value>false</value>
<value-attributes>
<type>boolean</type>
</value-attributes>
<description>
Execute validation to check if the connection is valid when the connection is returned
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.defaultAutoCommit</name>
<value>true</value>
<value-attributes>
<type>boolean</type>
</value-attributes>
<description>
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.keepAlive</name>
<value>false</value>
<value-attributes>
<type>boolean</type>
</value-attributes>
<description>
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.poolPreparedStatements</name>
<value>true</value>
<value-attributes>
<type>boolean</type>
</value-attributes>
<description>
Open PSCache, specify count PSCache for every connection
</description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.maxPoolPreparedStatementPerConnectionSize</name>
<value>20</value>
<value-attributes>
<type>int</type>
</value-attributes>
<description></description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.spring.datasource.filters</name>
<value>stat,wall,log4j</value>
<description></description>
<on-ambari-upgrade add="true"/>
</property>
<property>
<name>spring.datasource.connectionProperties</name>
<value>druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000</value>
<description></description>
<on-ambari-upgrade add="true"/>
</property>
</configuration>