Skip to content

update tablet functions #839

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
CritasWang merged 1 commit into from
Aug 28, 2025
+48 −44
Merged

update tablet functions #839

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 12 additions & 11 deletions src/UserGuide/Master/Tree/API/Programming-Java-Native-API.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -202,24 +202,25 @@ import org.apache.iotdb.rpc.StatementExecutionException;
import org.apache.iotdb.session.pool.SessionPool;
import org.apache.tsfile.enums.TSDataType;
import org.apache.tsfile.write.record.Tablet;
import org.apache.tsfile.write.schema.IMeasurementSchema;
import org.apache.tsfile.write.schema.MeasurementSchema;

public class SessionPoolExample {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
// 1. init SessionPool
constructSessionPool();
// 2. execute insert data
insertTabletExample();
// 3. close SessionPool
closeSessionPool();
}
}

private static void constructSessionPool() {
private static void constructSessionPool() {
// Using nodeUrls ensures that when one node goes down, other nodes are automatically connected to retry
List<String> nodeUrls = new ArrayList<>();
nodeUrls.add("127.0.0.1:6667");
nodeUrls.add("127.0.0.1:6668");
//nodeUrls.add("127.0.0.1:6668");
sessionPool =
new SessionPool.Builder()
.nodeUrls(nodeUrls)
Expand All @@ -240,31 +241,31 @@ public class SessionPoolExample {
*/
// The schema of measurements of one device
// only measurementId and data type in MeasurementSchema take effects in Tablet
List<MeasurementSchema> schemaList = new ArrayList<>();
List<IMeasurementSchema> schemaList = new ArrayList<>();
schemaList.add(new MeasurementSchema("s1", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));

Tablet tablet = new Tablet("root.sg.d1", schemaList, 100);
Tablet tablet = new Tablet("root.sg.d1",schemaList,100);

// Method 1 to add tablet data
long timestamp = System.currentTimeMillis();

Random random = new Random();
for (long row = 0; row < 100; row++) {
int rowIndex = tablet.rowSize++;
int rowIndex = tablet.getRowSize();
tablet.addTimestamp(rowIndex, timestamp);
for (int s = 0; s < 3; s++) {
long value = random.nextLong();
tablet.addValue(schemaList.get(s).getMeasurementId(), rowIndex, value);
tablet.addValue(schemaList.get(s).getMeasurementName(), rowIndex, value);
}
if (tablet.rowSize == tablet.getMaxRowNumber()) {
if (tablet.getRowSize() == tablet.getMaxRowNumber()) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
timestamp++;
}
if (tablet.rowSize != 0) {
if (tablet.getRowSize() != 0) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
Expand Down
23 changes: 12 additions & 11 deletions src/UserGuide/latest/API/Programming-Java-Native-API.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -202,24 +202,25 @@ import org.apache.iotdb.rpc.StatementExecutionException;
import org.apache.iotdb.session.pool.SessionPool;
import org.apache.tsfile.enums.TSDataType;
import org.apache.tsfile.write.record.Tablet;
import org.apache.tsfile.write.schema.IMeasurementSchema;
import org.apache.tsfile.write.schema.MeasurementSchema;

public class SessionPoolExample {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
// 1. init SessionPool
constructSessionPool();
// 2. execute insert data
insertTabletExample();
// 3. close SessionPool
closeSessionPool();
}
}

private static void constructSessionPool() {
private static void constructSessionPool() {
// Using nodeUrls ensures that when one node goes down, other nodes are automatically connected to retry
List<String> nodeUrls = new ArrayList<>();
nodeUrls.add("127.0.0.1:6667");
nodeUrls.add("127.0.0.1:6668");
//nodeUrls.add("127.0.0.1:6668");
sessionPool =
new SessionPool.Builder()
.nodeUrls(nodeUrls)
Expand All @@ -240,31 +241,31 @@ public class SessionPoolExample {
*/
// The schema of measurements of one device
// only measurementId and data type in MeasurementSchema take effects in Tablet
List<MeasurementSchema> schemaList = new ArrayList<>();
List<IMeasurementSchema> schemaList = new ArrayList<>();
schemaList.add(new MeasurementSchema("s1", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));

Tablet tablet = new Tablet("root.sg.d1", schemaList, 100);
Tablet tablet = new Tablet("root.sg.d1",schemaList,100);

// Method 1 to add tablet data
long timestamp = System.currentTimeMillis();

Random random = new Random();
for (long row = 0; row < 100; row++) {
int rowIndex = tablet.rowSize++;
int rowIndex = tablet.getRowSize();
tablet.addTimestamp(rowIndex, timestamp);
for (int s = 0; s < 3; s++) {
long value = random.nextLong();
tablet.addValue(schemaList.get(s).getMeasurementId(), rowIndex, value);
tablet.addValue(schemaList.get(s).getMeasurementName(), rowIndex, value);
}
if (tablet.rowSize == tablet.getMaxRowNumber()) {
if (tablet.getRowSize() == tablet.getMaxRowNumber()) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
timestamp++;
}
if (tablet.rowSize != 0) {
if (tablet.getRowSize() != 0) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
Expand Down
23 changes: 12 additions & 11 deletions src/zh/UserGuide/Master/Tree/API/Programming-Java-Native-API.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -200,24 +200,25 @@ import org.apache.iotdb.rpc.StatementExecutionException;
import org.apache.iotdb.session.pool.SessionPool;
import org.apache.tsfile.enums.TSDataType;
import org.apache.tsfile.write.record.Tablet;
import org.apache.tsfile.write.schema.IMeasurementSchema;
import org.apache.tsfile.write.schema.MeasurementSchema;

public class SessionPoolExample {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
// 1. init SessionPool
constructSessionPool();
// 2. execute insert data
insertTabletExample();
// 3. close SessionPool
closeSessionPool();
}
}

private static void constructSessionPool() {
private static void constructSessionPool() {
// Using nodeUrls ensures that when one node goes down, other nodes are automatically connected to retry
List<String> nodeUrls = new ArrayList<>();
nodeUrls.add("127.0.0.1:6667");
nodeUrls.add("127.0.0.1:6668");
//nodeUrls.add("127.0.0.1:6668");
sessionPool =
new SessionPool.Builder()
.nodeUrls(nodeUrls)
Expand All @@ -238,31 +239,31 @@ public class SessionPoolExample {
*/
// The schema of measurements of one device
// only measurementId and data type in MeasurementSchema take effects in Tablet
List<MeasurementSchema> schemaList = new ArrayList<>();
List<IMeasurementSchema> schemaList = new ArrayList<>();
schemaList.add(new MeasurementSchema("s1", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));

Tablet tablet = new Tablet("root.sg.d1", schemaList, 100);
Tablet tablet = new Tablet("root.sg.d1",schemaList,100);

// Method 1 to add tablet data
long timestamp = System.currentTimeMillis();

Random random = new Random();
for (long row = 0; row < 100; row++) {
int rowIndex = tablet.rowSize++;
int rowIndex = tablet.getRowSize();
tablet.addTimestamp(rowIndex, timestamp);
for (int s = 0; s < 3; s++) {
long value = random.nextLong();
tablet.addValue(schemaList.get(s).getMeasurementId(), rowIndex, value);
tablet.addValue(schemaList.get(s).getMeasurementName(), rowIndex, value);
}
if (tablet.rowSize == tablet.getMaxRowNumber()) {
if (tablet.getRowSize() == tablet.getMaxRowNumber()) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
timestamp++;
}
if (tablet.rowSize != 0) {
if (tablet.getRowSize() != 0) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
Expand Down
23 changes: 12 additions & 11 deletions src/zh/UserGuide/latest/API/Programming-Java-Native-API.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -200,24 +200,25 @@ import org.apache.iotdb.rpc.StatementExecutionException;
import org.apache.iotdb.session.pool.SessionPool;
import org.apache.tsfile.enums.TSDataType;
import org.apache.tsfile.write.record.Tablet;
import org.apache.tsfile.write.schema.IMeasurementSchema;
import org.apache.tsfile.write.schema.MeasurementSchema;

public class SessionPoolExample {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
private static SessionPool sessionPool;
public static void main(String[] args) throws IoTDBConnectionException, StatementExecutionException {
// 1. init SessionPool
constructSessionPool();
// 2. execute insert data
insertTabletExample();
// 3. close SessionPool
closeSessionPool();
}
}

private static void constructSessionPool() {
private static void constructSessionPool() {
// Using nodeUrls ensures that when one node goes down, other nodes are automatically connected to retry
List<String> nodeUrls = new ArrayList<>();
nodeUrls.add("127.0.0.1:6667");
nodeUrls.add("127.0.0.1:6668");
//nodeUrls.add("127.0.0.1:6668");
sessionPool =
new SessionPool.Builder()
.nodeUrls(nodeUrls)
Expand All @@ -238,31 +239,31 @@ public class SessionPoolExample {
*/
// The schema of measurements of one device
// only measurementId and data type in MeasurementSchema take effects in Tablet
List<MeasurementSchema> schemaList = new ArrayList<>();
List<IMeasurementSchema> schemaList = new ArrayList<>();
schemaList.add(new MeasurementSchema("s1", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s2", TSDataType.INT64));
schemaList.add(new MeasurementSchema("s3", TSDataType.INT64));

Tablet tablet = new Tablet("root.sg.d1", schemaList, 100);
Tablet tablet = new Tablet("root.sg.d1",schemaList,100);

// Method 1 to add tablet data
long timestamp = System.currentTimeMillis();

Random random = new Random();
for (long row = 0; row < 100; row++) {
int rowIndex = tablet.rowSize++;
int rowIndex = tablet.getRowSize();
tablet.addTimestamp(rowIndex, timestamp);
for (int s = 0; s < 3; s++) {
long value = random.nextLong();
tablet.addValue(schemaList.get(s).getMeasurementId(), rowIndex, value);
tablet.addValue(schemaList.get(s).getMeasurementName(), rowIndex, value);
}
if (tablet.rowSize == tablet.getMaxRowNumber()) {
if (tablet.getRowSize() == tablet.getMaxRowNumber()) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
timestamp++;
}
if (tablet.rowSize != 0) {
if (tablet.getRowSize() != 0) {
sessionPool.insertTablet(tablet);
tablet.reset();
}
Expand Down