Set default of orc.stripe.size.check.ratio and orc.dictionary.max.size.bytes to 0

Author: QianyongY

java/core/src/java/org/apache/orc/OrcConf.java

@@ -121,7 +121,7 @@ public enum OrcConf {
           "dictionary encoding.  Use 1 to always use dictionary encoding."),
   DICTIONARY_MAX_SIZE_IN_BYTES("orc.dictionary.max.size.bytes",
       "orc.dictionary.max.size.bytes",
-      16 * 1024 * 1024,
+      0,
       "If the total size of the dictionary is greater than this\n" +
           ", turn off dictionary encoding. Use 0 to disable this check."),
   ROW_INDEX_STRIDE_DICTIONARY_CHECK("orc.dictionary.early.check",
@@ -190,7 +190,7 @@ public enum OrcConf {
         + " Use orc.stripe.row.count instead if the value larger than orc.stripe.row.count."),
   STRIPE_SIZE_CHECKRATIO("orc.stripe.size.check.ratio",
       "orc.stripe.size.check.ratio",
-      2.0,
+      0.0,
       "Flush stripe if the tree writer size in bytes is larger than (this * orc.stripe.size). " +
           "Use 0 to disable this check."),
   OVERWRITE_OUTPUT_FILE("orc.overwrite.output.file", "orc.overwrite.output.file", false,

site/_docs/core-java-config.md

@@ -167,7 +167,7 @@ permalink: /docs/core-java-config.html
 </tr>
 <tr>
   <td><code>orc.dictionary.max.size.bytes</code></td>
-  <td>16777216</td>
+  <td>0</td>
   <td>
     If the total size of the dictionary is greater than this, turn off dictionary encoding. Use 0 to disable this check.
   </td>
@@ -293,7 +293,7 @@ permalink: /docs/core-java-config.html
 </tr>
 <tr>
   <td><code>orc.stripe.size.check.ratio</code></td>
-  <td>2.0</td>
+  <td>0.0</td>
   <td>
     Flush stripe if the tree writer size in bytes is larger than (this * orc.stripe.size). Use 0 to disable this check.
   </td>