saintstack commented on a change in pull request #2753:
URL: https://github.com/apache/hbase/pull/2753#discussion_r538781244
##
File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java
##
@@ -363,7 +363,23 @@ static TableName getTable(final byte [] regionName) {
@InterfaceAudience.Private // For use by internals only.
public static boolean isEncodedRegionName(byte[] regionName) {
// If not parseable as region name, presume encoded. TODO: add stringency;
e.g. if hex.
-return parseRegionNameOrReturnNull(regionName) == null &&
regionName.length <= MD5_HEX_LENGTH;
+if (parseRegionNameOrReturnNull(regionName) == null) {
+ if (regionName.length > MD5_HEX_LENGTH) {
+return false;
+ } else if (regionName.length == MD5_HEX_LENGTH) {
+return true;
+ } else {
+String encodedName = Bytes.toString(regionName);
+try {
+ Integer.parseInt(encodedName);
+ // If this is a valid integer, it could be hbase:meta's encoded
region name.
+ return true;
Review comment:
We know the hbase:meta int. It does not change. Compare it? When meta
splits, it will have md5 for new regions.
##
File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java
##
@@ -363,7 +363,23 @@ static TableName getTable(final byte [] regionName) {
@InterfaceAudience.Private // For use by internals only.
public static boolean isEncodedRegionName(byte[] regionName) {
// If not parseable as region name, presume encoded. TODO: add stringency;
e.g. if hex.
-return parseRegionNameOrReturnNull(regionName) == null &&
regionName.length <= MD5_HEX_LENGTH;
+if (parseRegionNameOrReturnNull(regionName) == null) {
+ if (regionName.length > MD5_HEX_LENGTH) {
+return false;
+ } else if (regionName.length == MD5_HEX_LENGTH) {
+return true;
Review comment:
What are we protecting against? Could we be passed a tablename? If so,
why can't we have a tablename that is an MD5? Or 32 bytes in size? Should we
check it is all hex at least? I suppose if someone passes a tablename that is
an md5, then they are asking for trouble?
##
File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java
##
@@ -363,7 +363,23 @@ static TableName getTable(final byte [] regionName) {
@InterfaceAudience.Private // For use by internals only.
public static boolean isEncodedRegionName(byte[] regionName) {
// If not parseable as region name, presume encoded. TODO: add stringency;
e.g. if hex.
-return parseRegionNameOrReturnNull(regionName) == null &&
regionName.length <= MD5_HEX_LENGTH;
+if (parseRegionNameOrReturnNull(regionName) == null) {
+ if (regionName.length > MD5_HEX_LENGTH) {
+return false;
+ } else if (regionName.length == MD5_HEX_LENGTH) {
+return true;
+ } else {
+String encodedName = Bytes.toString(regionName);
+try {
+ Integer.parseInt(encodedName);
+ // If this is a valid integer, it could be hbase:meta's encoded
region name.
+ return true;
+} catch(NumberFormatException er) {
+ return false;
+}
+ }
+}
+return false;
Review comment:
How about some tests for this change in this method?
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