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ejttianyu pushed a commit to branch dev_new_merge
in repository https://gitbox.apache.org/repos/asf/incubator-iotdb.git


The following commit(s) were added to refs/heads/dev_new_merge by this push:
     new f24a81c  add error log
f24a81c is described below

commit f24a81c6f691a21e5fef18572a09efbd8316bce0
Author: EJTTianyu <[email protected]>
AuthorDate: Fri Jun 12 17:52:33 2020 +0800

    add error log
---
 .../java/org/apache/iotdb/db/engine/MetadataManagerHelper.java     | 7 ++++++-
 .../src/test/java/org/apache/iotdb/db/engine/merge/MergeTest.java  | 7 ++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git 
a/server/src/test/java/org/apache/iotdb/db/engine/MetadataManagerHelper.java 
b/server/src/test/java/org/apache/iotdb/db/engine/MetadataManagerHelper.java
index 77ea60d..fadf433 100644
--- a/server/src/test/java/org/apache/iotdb/db/engine/MetadataManagerHelper.java
+++ b/server/src/test/java/org/apache/iotdb/db/engine/MetadataManagerHelper.java
@@ -18,6 +18,7 @@
  */
 package org.apache.iotdb.db.engine;
 
+import org.apache.iotdb.db.engine.merge.MergeTest;
 import org.apache.iotdb.db.metadata.MManager;
 import org.apache.iotdb.tsfile.common.conf.TSFileDescriptor;
 import org.apache.iotdb.tsfile.file.metadata.enums.CompressionType;
@@ -25,9 +26,13 @@ import 
org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
 import org.apache.iotdb.tsfile.file.metadata.enums.TSEncoding;
 
 import java.util.Collections;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class MetadataManagerHelper {
 
+  private static final Logger logger = 
LoggerFactory.getLogger(MetadataManagerHelper.class);
+
   public static void initMetadata() {
     MManager mmanager = MManager.getInstance();
     mmanager.init();
@@ -84,7 +89,7 @@ public class MetadataManagerHelper {
           TSEncoding.PLAIN, compressionType, Collections.emptyMap());
 
     } catch (Exception e) {
-      System.err.println(e);
+      logger.error("Initialize the metadata manager failed:{}, 
reason:{}",e.getMessage(),e);
       throw new RuntimeException("Initialize the metadata manager failed", e);
     }
   }
diff --git 
a/server/src/test/java/org/apache/iotdb/db/engine/merge/MergeTest.java 
b/server/src/test/java/org/apache/iotdb/db/engine/merge/MergeTest.java
index 2885fa5..287e3c1 100644
--- a/server/src/test/java/org/apache/iotdb/db/engine/merge/MergeTest.java
+++ b/server/src/test/java/org/apache/iotdb/db/engine/merge/MergeTest.java
@@ -38,6 +38,7 @@ import org.apache.iotdb.db.exception.StorageEngineException;
 import org.apache.iotdb.db.metadata.MManager;
 import org.apache.iotdb.db.query.control.FileReaderManager;
 import org.apache.iotdb.db.utils.EnvironmentUtils;
+import org.apache.iotdb.tsfile.encoding.encoder.DeltaBinaryEncoder;
 import org.apache.iotdb.tsfile.exception.write.WriteProcessException;
 import org.apache.iotdb.tsfile.file.metadata.enums.CompressionType;
 import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
@@ -49,9 +50,13 @@ import 
org.apache.iotdb.tsfile.write.record.datapoint.DataPoint;
 import org.apache.iotdb.tsfile.write.schema.MeasurementSchema;
 import org.junit.After;
 import org.junit.Before;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public abstract class MergeTest {
 
+  private static final Logger logger = 
LoggerFactory.getLogger(MergeTest.class);
+
   protected static final String MERGE_TEST_SG = "root.mergeTest";
 
   protected int seqFileNum = 5;
@@ -194,7 +199,7 @@ public abstract class MergeTest {
       
fileWriter.writeVersion(tsFileResource.getHistoricalVersions().iterator().next());
       fileWriter.close();
     } catch (Exception e){
-      System.err.println(e);
+      logger.error("meet error when prepare data files: {}, reason:{}", 
e.getMessage(), e);
     }
   }
 }
\ No newline at end of file

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