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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2020/10/05 08:38:34 UTC
[GitHub] [iotdb] EJTTianYu opened a new pull request #1796: [IOTDB-886]fix float loss precision
EJTTianYu opened a new pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796
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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #1796: [IOTDB-886]fix float loss precision
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URL: https://github.com/apache/iotdb/pull/1796#issuecomment-703493250
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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #1796: [IOTDB-886]fix float loss precision
Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796#issuecomment-703522091
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[GitHub] [iotdb] jixuan1989 commented on a change in pull request #1796: [IOTDB-886]fix float loss precision
Posted by GitBox <gi...@apache.org>.
jixuan1989 commented on a change in pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796#discussion_r508130935
##########
File path: server/src/main/java/org/apache/iotdb/db/utils/TypeInferenceUtils.java
##########
@@ -63,6 +69,9 @@ public static TSDataType getPredictedDataType(Object value, boolean inferType) {
return booleanStringInferType;
} else if (isNumber(strValue)){
if (!strValue.contains(TsFileConstant.PATH_SEPARATOR)) {
+ if (isConvertFloatPrecisionLack(strValue)) {
Review comment:
how about just check the length of the string?
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[GitHub] [iotdb] qiaojialin merged pull request #1796: [IOTDB-886]fix float loss precision
Posted by GitBox <gi...@apache.org>.
qiaojialin merged pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796
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[GitHub] [iotdb] sonarcloud[bot] removed a comment on pull request #1796: [IOTDB-886]fix float loss precision
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sonarcloud[bot] removed a comment on pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796#issuecomment-703493250
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[GitHub] [iotdb] qiaojialin commented on a change in pull request #1796: [IOTDB-886]fix float loss precision
Posted by GitBox <gi...@apache.org>.
qiaojialin commented on a change in pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796#discussion_r507410119
##########
File path: server/src/main/java/org/apache/iotdb/db/utils/TypeInferenceUtils.java
##########
@@ -52,6 +54,10 @@ private static boolean isBoolean(String s) {
.equalsIgnoreCase(SQLConstant.BOOLEAN_FALSE);
}
+ private static boolean isConvertFloatPrecisionLack(String s){
+ return Long.parseLong(s) > (2 << 24);
Review comment:
This may be time-consuming when insert integer string.
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[GitHub] [iotdb] qiaojialin commented on a change in pull request #1796: [IOTDB-886]fix float loss precision
Posted by GitBox <gi...@apache.org>.
qiaojialin commented on a change in pull request #1796:
URL: https://github.com/apache/iotdb/pull/1796#discussion_r511614003
##########
File path: server/src/main/java/org/apache/iotdb/db/utils/TypeInferenceUtils.java
##########
@@ -63,6 +69,9 @@ public static TSDataType getPredictedDataType(Object value, boolean inferType) {
return booleanStringInferType;
} else if (isNumber(strValue)){
if (!strValue.contains(TsFileConstant.PATH_SEPARATOR)) {
+ if (isConvertFloatPrecisionLack(strValue)) {
Review comment:
this will only happen at the first insertion of a time series, don't worry
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