[jira] [Commented] (IMPALA-9615) Make re2's max_mem option configurable via an Impala startup flag.

[ASF subversion and git services (Jira)]

Title: Message Title

ASF subversion and git services commented on IMPALA-9615   Re: Make re2's max_mem option configurable via an Impala startup flag. Commit a625a95dbd347d5a5e64566c77bcb27e991ce352 in impala's branch refs/heads/master from Omid Shahidi [ https://gitbox.apache.org/repos/asf?p=impala.git;h=a625a95db ] IMPALA-9615: re2's max_mem opt configurable via an Impala startup flag Some regex patterns require more memory to be compiled and pattern matched using different string functions and like predicate available. For more memory consuming patterns this can cause the following error: "re2/re2.cc:667: DFA out of memory: size xxxxx, bytemap range xx, list count xxxxx". To avoid such errors in Impalad's ERROR log, a global flag can be added to impala cluster startup. The re2_mem_limit flag will accept a memory specification string to set the re2 max_mem parameter for memory used to store regexps in Bytes. Testing: Use a long regex pattern to use up all the memory in the case of allocating less or the same amount of memory as default for re2. By using a greater value for re2_mem_limit flag, the regexp can be consumed with no error. Change-Id: Idf28d2f7217b1322ab8fdfb2c02fff0608078571 Reviewed-on: http://gerrit.cloudera.org:8080/18602 Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Add Comment   This message was sent by Atlassian Jira (v8.20.10#820010-sha1:ace47f9)