akalash commented on a change in pull request #8577:
URL: https://github.com/apache/ignite/pull/8577#discussion_r545905042
##########
File path:
modules/core/src/main/java/org/apache/ignite/internal/direct/stream/v2/DirectByteBufferStreamImplV2.java
##########
@@ -301,6 +302,9 @@
/** */
protected boolean lastFinished;
+ /** map for cashing byte-array representations of strings */
+ private Map<String, byte[]> stringsMap;
Review comment:
Why are you using a map here? A simple byte array is enough, isn't it?
##########
File path:
modules/core/src/main/java/org/apache/ignite/internal/direct/stream/v2/DirectByteBufferStreamImplV2.java
##########
@@ -584,7 +588,29 @@ public DirectByteBufferStreamImplV2(MessageFactory
msgFactory) {
/** {@inheritDoc} */
@Override public void writeString(String val) {
- writeByteArray(val != null ? val.getBytes() : null);
+ if (val != null) {
+ if (buf.capacity() < val.length()) {
+ if (stringsMap == null)
+ stringsMap = new HashMap<>();
+
+ byte[] bytes = stringsMap.computeIfAbsent(val, s ->
s.getBytes());
+
+ try {
+ writeByteArray(bytes);
+ }
+ catch (Exception e) {
Review comment:
I believe if an exception appears here, this whole object will be
invalid, for example, arrOff would be incorrect, so perhaps it's not necessary
to handle this exception here.
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