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[fix](mysql) fix mysql channel infinite blocking#28808

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Merged
morningman merged 1 commit into from
Dec 29, 2023
Merged

[fix](mysql) fix mysql channel infinite blocking #28808

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14 changes: 10 additions & 4 deletions fe/fe-core/src/main/java/org/apache/doris/mysql/MysqlChannel.java
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Original file line numberDiff line numberDiff line change
Expand Up@@ -31,6 +31,7 @@
import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.util.concurrent.TimeUnit;
import javax.net.ssl.SSLEngine;
import javax.net.ssl.SSLEngineResult;
import javax.net.ssl.SSLException;
Expand DownExpand Up@@ -79,6 +80,8 @@ public class MysqlChannel {
// mysql flag CLIENT_DEPRECATE_EOF
private boolean clientDeprecatedEOF;

private ConnectContext context;

protected MysqlChannel() {
// For DummyMysqlChannel
}
Expand All@@ -91,7 +94,7 @@ public boolean clientDeprecatedEOF() {
return clientDeprecatedEOF;
}

public MysqlChannel(StreamConnection connection) {
public MysqlChannel(StreamConnection connection, ConnectContext context) {
Preconditions.checkNotNull(connection);
this.sequenceId = 0;
this.isSend = false;
Expand All@@ -113,6 +116,7 @@ public MysqlChannel(StreamConnection connection) {
this.defaultBuffer = ByteBuffer.allocate(16 * 1024);
this.headerByteBuffer = ByteBuffer.allocate(PACKET_HEADER_LEN);
this.sendBuffer = ByteBuffer.allocate(2 * 1024 * 1024);
this.context = context;
}

public void initSslBuffer() {
Expand DownExpand Up@@ -195,7 +199,8 @@ protected int readAll(ByteBuffer dstBuf, boolean isHeader) throws IOException {
}
try {
while (dstBuf.remaining() != 0) {
int ret = Channels.readBlocking(conn.getSourceChannel(), dstBuf);
int ret = Channels.readBlocking(conn.getSourceChannel(), dstBuf, context.getNetReadTimeout(),
TimeUnit.SECONDS);
// return -1 when remote peer close the channel
if (ret == -1) {
decryptData(dstBuf, isHeader);
Expand DownExpand Up@@ -365,12 +370,13 @@ private ByteBuffer expandPacket(ByteBuffer result, int packetLen) {
protected void realNetSend(ByteBuffer buffer) throws IOException {
buffer = encryptData(buffer);
long bufLen = buffer.remaining();
long writeLen = Channels.writeBlocking(conn.getSinkChannel(), buffer);
long writeLen = Channels.writeBlocking(conn.getSinkChannel(), buffer, context.getNetWriteTimeout(),
TimeUnit.SECONDS);
if (bufLen != writeLen) {
throw new IOException("Write mysql packet failed.[write=" + writeLen
+ ", needToWrite=" + bufLen + "]");
}
Channels.flushBlocking(conn.getSinkChannel());
Channels.flushBlocking(conn.getSinkChannel(), context.getNetWriteTimeout(), TimeUnit.SECONDS);
isSend = true;
}

Expand Down
10 changes: 9 additions & 1 deletion fe/fe-core/src/main/java/org/apache/doris/qe/ConnectContext.java
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Expand Up@@ -327,7 +327,7 @@ public ConnectContext(StreamConnection connection) {
connectType = ConnectType.MYSQL;
serverCapability = MysqlCapability.DEFAULT_CAPABILITY;
if (connection != null) {
mysqlChannel = new MysqlChannel(connection);
mysqlChannel = new MysqlChannel(connection, this);
} else {
mysqlChannel = new DummyMysqlChannel();
}
Expand DownExpand Up@@ -1033,5 +1033,13 @@ public boolean isSkipAuth() {
public void setSkipAuth(boolean skipAuth) {
this.skipAuth = skipAuth;
}

public int getNetReadTimeout() {
return this.sessionVariable.getNetReadTimeout();
}

public int getNetWriteTimeout() {
return this.sessionVariable.getNetWriteTimeout();
}
}