HIVE-22417: Remove stringifyException from MetaStore

metastore/src/java/org/apache/hadoop/hive/metastore/SerDeStorageSchemaReader.java

@@ -23,7 +23,6 @@
 import org.apache.hadoop.hive.metastore.api.FieldSchema;
 import org.apache.hadoop.hive.metastore.api.MetaException;
 import org.apache.hadoop.hive.metastore.api.Table;
-import org.apache.hadoop.hive.metastore.utils.StringUtils;
 
 import java.util.List;
 
@@ -47,7 +46,6 @@ public List<FieldSchema> readSchema(Table tbl, EnvironmentContext envContext, Co
       Deserializer s = HiveMetaStoreUtils.getDeserializer(conf, tbl, null, false);
       return HiveMetaStoreUtils.getFieldsFromDeserializer(tbl.getTableName(), s, conf);
     } catch (Exception e) {
-      StringUtils.stringifyException(e);
       throw new MetaException(e.getMessage());
     } finally {
       if (orgHiveLoader != null) {

ql/src/java/org/apache/hadoop/hive/ql/exec/ReplCopyTask.java

@@ -19,7 +19,6 @@
 package org.apache.hadoop.hive.ql.exec;
 
 import org.apache.hadoop.hive.metastore.ReplChangeManager;
-import org.apache.hadoop.hive.metastore.api.MetaException;
 import org.apache.hadoop.hive.ql.exec.repl.util.ReplUtils;
 import org.apache.hadoop.hive.ql.parse.EximUtil;
 import org.apache.hadoop.hive.ql.parse.ReplicationSpec;
@@ -189,10 +188,10 @@ private List<ReplChangeManager.FileInfo> filesInFileListing(FileSystem fs, Path
           ReplChangeManager.FileInfo f = ReplChangeManager
               .getFileInfo(new Path(fragments[0]), fragments[1], fragments[2], fragments[3], conf);
           filePaths.add(f);
-        } catch (MetaException e) {
+        } catch (IOException ioe) {
           // issue warning for missing file and throw exception
           LOG.warn("Cannot find {} in source repo or cmroot", fragments[0]);
-          throw new IOException(e.getMessage());
+          throw ioe;
         }
         // Note - we need srcFs rather than fs, because it is possible that the _files lists files
         // which are from a different filesystem than the fs where the _files file itself was loaded

ql/src/java/org/apache/hadoop/hive/ql/parse/repl/dump/events/AbstractEventHandler.java

@@ -106,7 +106,7 @@ protected void writeEncodedDumpFiles(Context withinContext, Iterable<String> fil
   }
 
   protected void writeFileEntry(Table table, Partition ptn, String file, Context withinContext)
-          throws IOException, LoginException, MetaException, HiveFatalException {
+          throws IOException, LoginException, HiveFatalException {
     HiveConf hiveConf = withinContext.hiveConf;
     String distCpDoAsUser = hiveConf.getVar(HiveConf.ConfVars.HIVE_DISTCP_DOAS_USER);
     if (!Utils.shouldDumpMetaDataOnly(withinContext.hiveConf)) {

ql/src/java/org/apache/hadoop/hive/ql/parse/repl/dump/events/CreateFunctionHandler.java

@@ -75,7 +75,7 @@ public void handle(Context withinContext) throws Exception {
   }
 
   private void copyFunctionBinaries(List<DataCopyPath> functionBinaryCopyPaths, HiveConf hiveConf)
-          throws MetaException, IOException, LoginException, HiveFatalException {
+          throws IOException, LoginException, HiveFatalException {
     if (!functionBinaryCopyPaths.isEmpty()) {
       String distCpDoAsUser = hiveConf.getVar(HiveConf.ConfVars.HIVE_DISTCP_DOAS_USER);
       List<ReplChangeManager.FileInfo> filePaths = new ArrayList<>();

standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/ReplChangeManager.java

@@ -205,7 +205,7 @@ private ReplChangeManager(Configuration conf) throws MetaException {
         inited = true;
       }
     } catch (IOException e) {
-      throw new MetaException(StringUtils.stringifyException(e));
+      throw new MetaException(e.getMessage());
     }
   }
 
@@ -378,32 +378,28 @@ static Path getCMPath(Configuration conf, String name, String checkSum, String c
    * @return Corresponding FileInfo object
    */
   public static FileInfo getFileInfo(Path src, String checksumString, String srcCMRootURI, String subDir,
-                                     Configuration conf) throws MetaException {
-    try {
-      FileSystem srcFs = src.getFileSystem(conf);
-      if (checksumString == null) {
-        return new FileInfo(srcFs, src, subDir);
-      }
+      Configuration conf) throws IOException {
+    FileSystem srcFs = src.getFileSystem(conf);
+    if (checksumString == null) {
+      return new FileInfo(srcFs, src, subDir);
+    }
 
-      Path cmPath = getCMPath(conf, src.getName(), checksumString, srcCMRootURI);
-      if (!srcFs.exists(src)) {
-        return new FileInfo(srcFs, src, cmPath, checksumString, false, subDir);
-      }
+    Path cmPath = getCMPath(conf, src.getName(), checksumString, srcCMRootURI);
+    if (!srcFs.exists(src)) {
+      return new FileInfo(srcFs, src, cmPath, checksumString, false, subDir);
+    }
 
-      String currentChecksumString;
-      try {
-        currentChecksumString = checksumFor(src, srcFs);
-      } catch (IOException ex) {
-        // If the file is missing or getting modified, then refer CM path
-        return new FileInfo(srcFs, src, cmPath, checksumString, false, subDir);
-      }
-      if ((currentChecksumString == null) || checksumString.equals(currentChecksumString)) {
-        return new FileInfo(srcFs, src, cmPath, checksumString, true, subDir);
-      } else {
-        return new FileInfo(srcFs, src, cmPath, checksumString, false, subDir);
-      }
-    } catch (IOException e) {
-      throw new MetaException(StringUtils.stringifyException(e));
+    String currentChecksumString;
+    try {
+      currentChecksumString = checksumFor(src, srcFs);
+    } catch (IOException ex) {
+      // If the file is missing or getting modified, then refer CM path
+      return new FileInfo(srcFs, src, cmPath, checksumString, false, subDir);
+    }
+    if ((currentChecksumString == null) || checksumString.equals(currentChecksumString)) {
+      return new FileInfo(srcFs, src, cmPath, checksumString, true, subDir);
+    } else {
+      return new FileInfo(srcFs, src, cmPath, checksumString, false, subDir);
     }
   }
 

standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/utils/StringUtils.java

@@ -98,7 +98,9 @@ public static String normalizeIdentifier(String identifier) {
    * Make a string representation of the exception.
    * @param e The exception to stringify
    * @return A string with exception name and call stack.
+   * @deprecated
    */
+  @Deprecated
   public static String stringifyException(Throwable e) {
     StringWriter stm = new StringWriter();
     PrintWriter wrt = new PrintWriter(stm);

standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java

@@ -987,7 +987,8 @@ public boolean dropDatabase(String catName, String dbname)
       pm.deletePersistent(db);
       success = commitTransaction();
     } catch (Exception e) {
-      throw new MetaException(e.getMessage() + " " + org.apache.hadoop.hive.metastore.utils.StringUtils.stringifyException(e));
+      LOG.error("Failed to drop database", e);
+      throw new MetaException(e.getMessage());
     } finally {
       rollbackAndCleanup(success, null);
     }
@@ -1195,7 +1196,8 @@ public boolean dropDataConnector(String dcname)
       pm.deletePersistent(mdb);
       success = commitTransaction();
     } catch (Exception e) {
-      throw new MetaException(e.getMessage() + " " + org.apache.hadoop.hive.metastore.utils.StringUtils.stringifyException(e));
+      LOG.error("Failed to drop data connector", e);
+      throw new MetaException(e.getMessage());
     } finally {
       rollbackAndCleanup(success, null);
     }
@@ -3247,7 +3249,8 @@ protected List<Partition> getJdoResult(GetHelper<List<Partition>> ctx) throws Me
         try {
           return convertToParts(listMPartitions(catName, dbName, tblName, maxParts));
         } catch (Exception e) {
-          throw new MetaException(e.getMessage() + " " + org.apache.hadoop.hive.metastore.utils.StringUtils.stringifyException(e));
+          LOG.error("Failed to convert to parts", e);
+          throw new MetaException(e.getMessage());
         }
       }
     }.run(false);

standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/utils/MetaStoreServerUtils.java

@@ -1217,8 +1217,8 @@ public static void setNestedProperty(Object bean, String propertyName, Object va
       }
       PropertyUtils.setNestedProperty(bean, propertyName, value);
     } catch (Exception e) {
-      throw new MetaException(
-          org.apache.hadoop.hive.metastore.utils.StringUtils.stringifyException(e));
+      LOG.error("Failed to set nested property", e);
+      throw new MetaException(e.getMessage());
     }
   }