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check fetch size in query #1478

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Merged
qiaojialin merged 1 commit into from
Jul 10, 2020
Merged

check fetch size in query #1478

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6 changes: 6 additions & 0 deletions server/src/main/java/org/apache/iotdb/db/service/TSServiceImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,7 @@ public class TSServiceImpl implements TSIService.Iface, ServerContext {
private static final int MAX_SIZE =
IoTDBDescriptor.getInstance().getConfig().getQueryCacheSizeInMetric();
private static final int DELETE_SIZE = 20;
private static final int FETCH_SIZE = 10000;
private static final String ERROR_PARSING_SQL =
"meet error while parsing SQL to physical plan: {}";
private static final List<SqlArgument> sqlArgumentList = new ArrayList<>(MAX_SIZE);
Expand Down Expand Up @@ -553,6 +554,11 @@ private TSExecuteStatementResp internalExecuteQueryStatement(String statement,
try {
TSExecuteStatementResp resp = getQueryResp(plan, username); // column headers

// In case users forget to set this field in query, use the default value
if (fetchSize == 0) {
fetchSize = FETCH_SIZE;
}

if (plan instanceof ShowTimeSeriesPlan) {
//If the user does not pass the limit, then set limit = fetchSize and haslimit=false,else set haslimit = true
if (((ShowTimeSeriesPlan) plan).getLimit() == 0) {
Expand Down