[FAB-5162] java-sdk leak memory after long run

ZhangHongQuan-Dianrong · cr22rc · commit 137070b21c1c · 2017-07-11T15:38:19.000Z
[FAB-5162] txListeners in Class channel forgot to rmeove unless items,
this lead to memory leak. remoing the useless items would resolve the
problem.

Change-Id: I5d00e94400688bc1a31ef42bc5e1955e203e621d
Signed-off-by: zhang hongquan &lt;hongquan.zhang@dianrong.com&gt;
diff --git a/src/main/java/org/hyperledger/fabric/sdk/Channel.java b/src/main/java/org/hyperledger/fabric/sdk/Channel.java
@@ -2553,6 +2553,9 @@ void fire(BlockEvent.TransactionEvent transactionEvent) {
 
                 if (null != l) {
                     l.removeFirstOccurrence(this);
+                    if (l.size() == 0) {
+                        txListeners.remove(txID);
+                    }
                 }
             }
             if (future.isDone()) {

Original file line number	Diff line number	Diff line change
`@@ -2553,6 +2553,9 @@ void fire(BlockEvent.TransactionEvent transactionEvent) {`
`2553`	`2553`
`2554`	`2554`	`if (null != l) {`
`2555`	`2555`	`l.removeFirstOccurrence(this);`
	`2556`	`+ if (l.size() == 0) {`
	`2557`	`+ txListeners.remove(txID);`
	`2558`	`+ }`
`2556`	`2559`	`}`
`2557`	`2560`	`}`
`2558`	`2561`	`if (future.isDone()) {`