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zznate sudhirjkhatal

cassandra-connection-pool's Issues

Parent project not found in pom

I changed some stuff in the pom as it was not finding the parent project. I also added the riptano repository for cassandra and thrift dependencies (feel free to use this, we are committed to maintaining it). The additional changes in the pom are probably defined in the missing parent, but got the pom file working.
The diff follows...

diff --git a/pom.xml b/pom.xml
index d973465..e9899d6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,9 +1,4 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-   <parent>
-       <groupId>net.dataforte</groupId>
-       <artifactId>dataforte-parent</artifactId>
-       <version>3</version>
-   </parent>

    <modelVersion>4.0.0</modelVersion>
    <groupId>net.dataforte.cassandra</groupId>
@@ -32,19 +27,25 @@
    </distributionManagement>

    <dependencies>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.8.1</version>
+            <scope>test</scope>
+        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.6.1</version>
        </dependency>
        <dependency>
-           <groupId>org.apache.thrift</groupId>
+           <groupId>libthrift</groupId>
            <artifactId>libthrift</artifactId>
            <version>917130</version>
        </dependency>
        <dependency>
-           <groupId>org.apache</groupId>
-           <artifactId>cassandra</artifactId>
+           <groupId>org.apache.cassandra</groupId>
+           <artifactId>apache-cassandra</artifactId>
            <version>0.6.5</version>
        </dependency>
        <dependency>
@@ -98,6 +99,20 @@
    </scm>

    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>1.6</source>
+                    <target>1.6</target>
+                    <optimize>true</optimize>
+                    <debug>true</debug>
+                    <showDeprecation>true</showDeprecation>
+                    <showWarnings>true</showWarnings>
+                </configuration>
+            </plugin>
+        </plugins>
        <testResources>
            <testResource>
                <directory>src/test/resources</directory>
@@ -105,4 +120,11 @@
            </testResource>
        </testResources>
    </build>
+    <repositories>
+        <repository>
+            <id>riptano</id>
+            <name>riptano</name>
+            <url>http://mvn.riptano.com/content/repositories/public/</url>
+        </repository>
+    </repositories>
 </project>

Incorrect synchronization of ConnectionPool.connectionMap

Access to field connectionMap (which is not thread-safe) in class ConnectionPool is not synchronized properly. The problem is in method createConnection where new connections are created and put into the map however more threads can access the map at once - the locking mechanism on the connection does not protect the map. We encountered the problem in production resulting in infinite loop (caused by corrupted internal state of the map).

I suggest to replace HashMap with ConcurrentHashMap.

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